Dreamers of Empire (New York: F. A. Stokes, 1929), by Achmed Abdullah and Compton Pakenham, illust. by B. K. Morris (page images at Hathi Trust)

The Gates Ajar (Boston: Fields, Osgood, and Co., 1869), by Elizabeth Stuart Phelps (page images and uncorrected OCR text at MOA)

The Silent Partner (Boston: J. R. Osgood and Co.; London: Sampson and Low, 1871), by Elizabeth Stuart Phelps (page images and uncorrected OCR text at MOA)

The National Temperance Orator (New York: National Temperance Society and Publication house, 1881), ed. by L. Penney (page images and uncorrected OCR text at MOA)

Men, Women, and Ghosts (Boston: Fields, Osgood and Co., 1869), by Elizabeth Stuart Phelps (stable link)

Roosevelt, Czolgosz and Anarchy; Communism (New York: New York Anarchists, ca. 1901), by Jay Fox and Henry Addis (multiple formats at archive.org)

The Virginia Constitutional Convention of 1901-1902 (Johns Hopkins University Studies in Historical and Political Science, series 46, #3; 1928), by Ralph Clipman McDanel (multiple formats at archive.org)

The Workers' (Communist) Party and American Trade Unions (Johns Hopkins University Studies in Historical and Political Science, series 46, #2; 1928), by David M. Schneider (multiple formats at archive.org)

"I Have Listened to More Cant and Humbug.." (Geo. Buchanan, M.P.): Extracts From Speeches by James Maxton, George Buchanan, Campbell Stephen, William Gallacher, on the Abdication (Dec. 10th and 11th, 1936) (London: Independent Labour Party, ca. 1936), by James Maxton, George Buchanan, Campbell Stephen, and William Gallacher (multiple formats at archive.org)

How To Make Your Own Will, by Gordon Bowley (HTML with commentary at HowTo)

The Bank Tragedy (New York: Welch, Fracker Co., 1890), by Mary R. P. Hatch (stable link)

Lives of the Most Eminent Painters, Sculptors and Architects (10 volumes; London: Macmillan and Co. and the Medici Society, 1912-1915), by Giorgio Vasari, trans. by Gaston du C. De Vere (multiple formats at archive.org and Gutenberg)

Everybody's Magazine (partial serial archives)

A Bibliography of the History of the Latin-American Labor and Trade Union Movements (Bibliographical series #1, originally published 1965, revised 1967), by American Institute for Marxist Studies (multiple formats at archive.org)

By-Laws and Rules of Order of Jos. A. Mower Post No. 1, Dept. of the Gulf, G.A.R., New Orleans, La. (New Orleans: G. Ellis, 1884), by Grand Army of the Republic Joseph. A. Mower Post No. 1 (multiple formats at archive.org)

Lessons of the Revolution (ca. 1917), by Vladimir Ilʹich Lenin (multiple formats at archive.org)

Letters From Spain (New York: Workers Library Publishers, 1938), by Joe Dallet (multiple formats at archive.org)

Marx and Engels on Ireland: An Annotated Checklist (Bibliographical Series #15; New York: American Institute for Marxist Studies, 1981), by Ellen Hazelkorn (multiple formats at archive.org)

Memories of the Industrial Workers of the World (IWW) (Occasional paper - American Institute for Marxist Studies #24; 1977), by Elizabeth Gurley Flynn (multiple formats at archive.org)

Proceedings of the Eighth Annual Encampment of the Department of Louisiana and Mississippi, Grand Army of the Republic (New Orleans: Patterson and Ray, 1891), by Grand Army of the Republic Dept. of Louisiana and Mississippi (multiple formats at archive.org)