unions

en.wikipedia.org/wiki/Warren_Stanford_Stone "Warren Stanford Stone (1 February 1860 – 12 June 1925) was a railway worker who rose to head the Brotherhood of Locomotive Engineers in the United States from 1903 to 1925."

Stone was a spokesman for labor in the unrest of the summer of 1919, including pressing for nationalization of the railroads. See, for example, The Washington Times., August 06, 1919, FINAL EDITION, page 1 chroniclingamerica.loc.gov/lccn/sn84026749/1919-08-06/ed-... New-York Tribune., August 17, 1919, Image 49 chroniclingamerica.loc.gov/lccn/sn83030214/1919-08-17/ed-...

Big Bill Haywood, the labor leader, is tagged in another LoC/Flickr photo, see tags above. "The Industrial Workers of the World (IWW), under the leadership of William D. "Big Bill" Haywood, advocated a confrontational strategy that embraced violent tactics if necessary to win strikes, mobilize public opinion, or exact revenge for capitalist crimes. The "Wobblies," as they were known, were a small percentage of the Socialist movement, but they had an influence out of proportion to their numbers." (from Lewis I Gould: Four Hats in the Ring, the 1912 Election and the Birth of Modern American Politics, pg 108).

Big Bill in action, in another Bain Collection photo:

Delia Larkin, I think, holds the Irish Worker poster. She contributed to it weekly for its three year existence from 1911 to 1914. The printers then grew afraid to print it. She organised the feeding of three thousand children during the lockout and founded the Irish Women's Workers Union. It had distinctive badges and the women here may be wearing them. Davitt was dead since 1906 but W.M. Murphy, his fellow Nationalist, lived on to organise against the workers unions. He owned Dublin Tramways and the Irish Independent. Delia is also in another picture in the collection after the women's imprisonment. Beautiful Picture.

Mossy Carey I'd agree, thank you!. Her very distinctive hair is a help in identification... I've replaced this photo with a clearer version. Because more detail is apparent, we can date it now to Saturday, 6 December 1913. So, someone identified, and another photo dated: Time to haul out the NLI Flickr Bell again, methinks - Ding, Ding, Ding!