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Labor solidarity · Since 1905

IWW.Industrial Workers
of the World

One big union.
Thousands of individual stories.

From the mill gate to the jail cell: organizing, free speech and the struggle for worker power.

Textile strikers gather in a snowy street outside mill buildings in Lawrence, Massachusetts, in 1912.
Lawrence, Massachusetts · 1912Bain News Service / Library of Congress ↗

01 / The movement

Across trades.
Across languages.
Across borders.

The Industrial Workers of the World set out to organize workers together across industrial and craft divisions. Founded in Chicago in 1905, it connected immediate workplace demands with a far-reaching goal: workers’ control over the conditions and products of their labor. Founding proceedings ↗

Known as Wobblies, members organized in mills, mines, forests, fields and ports. Strikes and street meetings were joined by newspapers, songs, relief work and legal defense. Their campaigns repeatedly brought them into conflict with employers, police and government authorities. UW history ↗

This page follows the formative years, 1905–1924, and connects that history to NPPC’s individual prisoner records. The IWW continues today; its early history is one part of a longer movement. The IWW today ↗

02 / Places, campaigns & cases

Follow the struggle.

21 selected milestones in 16 places. Choose a city or a theme, then open an event for its sources and related records.

21 milestones

27 June 1905Chicago / OrganizingOne union across industries

Delegates meet at Brand’s Hall to found an organization that seeks worker power across trades, industries and national backgrounds. Bill Haywood calls the convention to order.

1906–1907Goldfield / OrganizingAn organizing foothold in the mining West

The IWW and Western Federation of Miners organize miners alongside service and construction workers. Economic crisis, employer resistance and federal troops help unravel their gains.

1909McKees Rocks / StrikesImmigrant workers challenge the steel-car industry

The Pressed Steel Car Company dispute becomes a major test of organizing across languages. IWW involvement helps bring national attention to workers’ demands and violent repression.

1909Missoula / Free speechThe street corner becomes a battleground

IWW speakers challenge restrictions on public organizing. Arrests turn the right to speak into a collective campaign, with Elizabeth Gurley Flynn among its prominent organizers.

1909–1910Spokane / Free speechOrganizers fill Spokane’s jails

Wobblies defy restrictions on street speaking in a campaign tied to their fight against exploitative employment agencies. Imprisonment and conditions inside the jails become organizing issues.

1910–1911Fresno / Free speechA free-speech fight in farm country

Organizers travel to Fresno to challenge restrictions on public meetings. The campaign confronts imprisonment and attacks on the union’s ability to organize agricultural workers.

January–March 1912Lawrence / StrikesThe Lawrence textile strike

A pay cut brings immigrant textile workers into a mass walkout. Organizing across languages, strike relief and public pressure help win wage gains in the struggle remembered as Bread and Roses.

1912San Diego / Free speechSpeech meets police and vigilante violence

A downtown speaking ban leads to a prolonged confrontation. IWW members and allies face arrests and violence while defending their ability to meet and organize in public.

1912Lawrence / Repression & defenseThe strike also becomes a prisoner-defense campaign

Joseph Ettor, Arturo Giovannitti and striker Joseph Caruso are imprisoned on murder charges during the Lawrence conflict. Their case makes legal defense part of the wider labor struggle.

1913Paterson / StrikesSilk workers sustain a long strike

Workers across Paterson’s silk industry pursue shorter hours and better conditions. The strike loses, but its mass meetings and public campaign leave an enduring record of worker organization.

1913Philadelphia / OrganizingLocal 8 builds interracial power on the waterfront

Black and white longshore workers organize together in Local 8. Ben Fletcher helps lead a union that challenges employers’ use of racial and ethnic division.

3 August 1913Wheatland / Repression & defenseA deadly confrontation in the hop fields

A clash at the Durst Ranch leaves four people dead and exposes harsh agricultural labor conditions. The aftermath brings imprisonment and a wider debate over labor camps.

19 November 1915Salt Lake City / Repression & defenseUtah executes Joe Hill

The IWW songwriter is executed after a disputed murder conviction. His case becomes a lasting focus of labor memory, protest and prisoner solidarity.

5 November 1916Everett / Repression & defenseGunfire at the Everett waterfront

At least five Wobblies and two deputies die when boats carrying IWW supporters reach Everett. Seventy-four Wobblies face murder-conspiracy charges; Thomas Tracy’s acquittal is followed by the release of the other defendants.

1917Spokane / StrikesTimber workers demand a different working day

A regional strike pushes for shorter hours and better camp conditions across the Pacific Northwest. Spokane is shown as a regional organizing reference, not the site of every strike.

12 July 1917Bisbee / Repression & defenseWorkers are forcibly removed from Bisbee

An armed roundup seizes striking miners and others. More than a thousand people are transported out of Arizona and left in New Mexico, without normal legal proceedings.

1 August 1917Butte / Repression & defenseFrank Little is lynched

Masked attackers seize the IWW organizer in Butte and hang him from a railroad trestle. Little had been supporting striking miners and opposing the war.

5 September 1917Chicago / Repression & defenseFederal agents raid the IWW nationwide

Federal raids seize union records and publications across the country. Chicago’s national headquarters becomes a focal point of the campaign that leads to mass prosecution.

1918Chicago / Repression & defenseA mass trial sends organizers to prison

The Chicago prosecution ends in convictions and long sentences for IWW organizers. Government surveillance, seized correspondence and union publications feature in the campaign against the defendants.

11 November 1919Centralia / Repression & defenseCentralia: violence, lynching and a contested trial

An Armistice Day confrontation at the IWW hall leaves four Legionnaires dead. Wesley Everest is later taken from jail and lynched; surviving Wobblies face murder prosecutions.

1924Chicago / OrganizingInternal conflict compounds repression

Disputes over leadership and organization culminate in a split at the Chicago convention. The IWW survives, but the rupture weakens a movement already battered by prosecution and employer opposition.

Dates retain the precision of the sources; broad period filters use the starting year. Newspaper research sometimes records a report’s publication date rather than the event date. These summaries use the identified event date or a broader year, with links for further reading. Coordinates: U.S. Census place Gazetteer.

03 / The wider geography

A network across
North America.

The University of Washington’s directory identifies 928 locals, branches and district councils in more than 350 cities and towns in the United States and Canada. Explore the directory ↗

Explore the historical union network.

The full UW map offers views by place and industry. Recorded active periods describe the surviving evidence, not necessarily a local’s founding or closing date. Points are approximate city locations.

Research: Arianne Hermida and James Gregory · IWW History Project, University of Washington.

The historical map is provided by UW through Tableau Public. Its own filters operate separately from the NPPC timeline. The map and directory links remain available if the embedded view cannot load.

04 / Solidarity in practice

How a union
became a movement.

Organization had to cross the divisions of the workplace—and survive when its members were jailed.

01

Industrial unionism

The IWW argued that workers in the same industry should organize together. Its preamble connects collective workplace power with a wider transformation of economic life.

Read the IWW preamble ↗
02

Interracial organizing

Philadelphia’s Local 8 made Black and white longshore workers part of a common organization. Ben Fletcher’s leadership shows how solidarity could challenge racial exclusion in the labor movement.

Peter Cole on Local 8 ↗
03

Workers across borders

Mexican workers brought their own political traditions, networks and organizing experience to the IWW. Connections with the Partido Liberal Mexicano place this history on both sides of the border.

Devra Weber’s research ↗
04

Speech & prisoner defense

Public speaking, strike support and legal defense became connected struggles. The Everett prosecutions show how a local confrontation could become a national campaign over evidence, responsibility and freedom.

Explore the Everett records ↗

05 / Repression & its aftermath

When organizing
became a prosecution.

The 1917 federal raids turned membership records, correspondence and publications into material for mass prosecutions. Wartime law and surveillance disrupted the union’s leadership and everyday organization. Steven Parfitt’s account ↗

Repression did not act alone. Disagreements about leadership and strategy helped produce the 1924 split. Studying both the state’s campaign and the union’s internal conflicts makes its survival—and its losses—more understandable. Read about the split ↗

Explore IWW prisoner records →

06 / People & case histories

Behind every case,
a person.

Selected people already documented by NPPC. Each profile connects to its biography and recorded cases; those cases may span more than one movement or period.

Browse IWW-affiliated profiles →

07 / The labor press

A movement
in many languages.

Kenyon Zimmer’s research for UW identifies 90 IWW periodicals in 19 languages. Newspapers connected workers across distance and preserved the arguments within the movement. Newspaper research ↗

Day by day

Campaign yearbooks

Follow contemporary reports of strikes, meetings, arrests and solidarity campaigns. Read their source notes alongside the entries.

Browse UW’s yearbooks ↗

Culture & memory

Joe Hill’s songs

Songwriting carried workplace experience into rallies and organizing drives. Hill’s life and prosecution became part of that shared memory.

Explore Joe Hill’s history ↗

08 / Follow the evidence

History you
can trace.

Inspired by the University of Washington’s IWW History Project, directed by James Gregory and Conor Casey. NPPC’s summaries connect that research with union documents, public archives and existing prisoner records.

The full local-union map remains hosted by its researchers. Sources are linked at the point of use; the list here provides a route into the wider archive.

Research, archives & source list
  1. University of Washington · IWW History Project ↗
  2. Arianne Hermida & James Gregory · Historical IWW locals ↗
  3. University of Washington · Full local-union directory ↗
  4. IWW · Proceedings of the founding convention ↗
  5. IWW · Preamble to the constitution ↗
  6. Arianne Hermida / UW · 1907 yearbook ↗
  7. University of Washington · 1909 yearbook ↗
  8. University of Washington · 1911 yearbook ↗
  9. University of Washington · 1912 yearbook ↗
  10. National Park Service · Labor history: Lawrence, 1912 ↗
  11. Library of Congress · Italian workers and the Lawrence prosecution ↗
  12. National Park Service · Paterson, America’s Silk City ↗
  13. Peter Cole / UW · Philadelphia’s interracial Local 8 ↗
  14. California Office of Historic Preservation · Wheatland, 1913 ↗
  15. Gibbs M. Smith / Utah History to Go · Joe Hill ↗
  16. University of Washington · Everett Massacre and trials ↗
  17. Arizona Historical Society / Arizona Memory Project · July 12, 1917 ↗
  18. University of Washington · Strike reports and source notes ↗
  19. IWW archive · Frank Little ↗
  20. Steven Parfitt / UW · The Justice Department campaign ↗
  21. UW Libraries · Centralia Tragedy Collection ↗
  22. Cameron Molyneux / UW · The 1924 split ↗
  23. Kenyon Zimmer / UW · IWW newspapers ↗
  24. University of Washington · Yearbooks, 1905–1924 ↗
  25. Devra Weber / UW · Mexican workers and the IWW ↗
  26. Industrial Workers of the World · Current organization ↗

Header photograph: Lawrence textile strike, 1912. Bain News Service, Library of Congress, LC-DIG-ggbain-10150. Original catalog record. No known restrictions on publication. Original image retained; framing varies with screen size.