Draft of an untitled novel about a woman's experiences in the Spanish-American War, typescript with revisions, 28 chapters
Draft of an untitled novel about a woman's experiences in the Spanish-American War, typescript, first 10 chapters
Agreement between John R. McMahon and G. W. Dillingham concerning the publication of a book by J. McMahom entitled Captain Mandervilli 1895-07-27
Blacklisting of employment bureaus, manuscript, 10 pp
An Irish Vidocq, farce in one act by John R. McMahon, typescript
Susan's sister, a farce in one act by John R. McMahon, typescript
Play mentioning Mrs. McVeigh's boarding house, Act II, typescript
Susie by John R. McMahon; unpublished manuscript, typescript
Untitled, begins "Chinatown in a state..."by John R. McMahon; unpublished manuscript, typescript
A Perfumed Trail by John R. McMahon; unpublished manuscript, typescript
The Agitators, Worker's Unite by John R. McMahon, manuscript page 276
Seen Too Oft by John R. McMahon; unpublished manuscript, typescript
Round the World for a Husband by John R. McMahon; unpublished manuscript, typescript
A Bachelor's Yuletide by John R. McMahon; unpublished manuscript, typescript
Road to Calvary, Ditrichstein and McMahon, partial 1906
Workers, Unite! - an unpublished radical novel, manuscript draft with revisions 1907
The Confederate and His Daughter, typescript
Sunshine Arrives in Southern California, typescript; rejection letter from editors of New Masses 1939
Sergius vs. Alexander Tolstoy, typescript; accepted by Soviet Russia Today after New Masses rejection 1934
Airplane in Exile, typescript
Before the Wrights Flew; it cost Sir Hiram Maxim $200,000 to rise an inch in England and the expense of artificial feathers discouraged Ader in France, typescript
The Wright Brothers and Doctor Spratt, typescript
The Man Who Saved the Dairy Industry, typescript
New York's Service Churches: health and welfare work that is non-sectarian, small church and big service house typify modern trend, revised typescript
The Critic of the Moon, comedy in 3 acts, typescript
Two letters to John from brother Robert found inside The Critic of the Moon, March 17 and April 7, 1903
How in the Suburbs - outline of a tri-weekly feature series of 800-900 words in each article
Wings and a Mother, typescript, with annotation of names of publications and dates
Airplane in Exile, typescript
Address by John R. McMahon on Scientific Achievements of the U.S.S.R., at Aldine Club dinner, auspices Soviet Russia Today, on Jan. 10, 1935
Scientists in Soviet Russia, with annotation of publications and dates; correspondence with publishers and rejection letters
Women in Canada's Government by Agnes C. Macphail, M. P. , with an annotation by John McMahon that she is the only woman member of the Canadian Federal Parliament
Personal documents and biographical information: copies of marriage certificate, passport, certificate of Baptism, military record, excerpt from Who's Who in America,
The Agitators (re-titled from The Comrades): a novel
The Quicksands by Margherita Arlina Hamm and John R. McMahon, typescript
A Village Feud, typescript
A Village Feud, typescript, copy 2
Edward Wayne, a novel, two bound volumes; first version with editing annotations and third version 1924
Ten short works rooted in the American military experience in the Philippines and Cuba during the closing years of the 19th C.: The Rolling Battery of Luzon, The Battle of Ration Run, French Leave, The Little Goddess, Sketches of Various Volunteers, The Muninous Regiment; The Maliton Bell, Ordered to the Front, The Hospital, Bugle Calls, Ballad of the Volunteer Officer, In the Phiippines: a comic drama, four acts; all typescript
Toilers and Idlers - scrapbook of press notices; many types of pressed fern leaves