Mason-Bees By: Jean-Henri Fabre

Masonic Monitor of the Degrees of Entered Apprentice, Fellow Craft and Master Mason together with the Ceremony of Installation, Laying Corner Stones, Dedications, Masonic Burial, Etc. By: George Thornburgh

Master of None By: Neil Goble

McIlvaine's Star By: August William Derleth

Measles By: William Colby Rucker

Measure for a Loner By: Jim Harmon

Medal of Honor By: Mack Reynolds

Medicine in Virginia, 1607-1699 By: Thomas Proctor Hughes

Medicine-Men Of The Apache By: John Gregory Bourke

Meeting of the Board By: Alan Edward Nourse

Memoir and Correspondence of Caroline Herschel By: Margaret Herschel

Men Women and God By: Arthur Herbert Gray

Mendelism Third Edition By: Reginald Crundall Punnett

Mental Defectives and Sexual Offenders Report of the Committee of Inquiry Appointed by the Hon. Sir Maui Pomare, K.B.E., C.M.G., Minister of Health By: New Zealand. Committee of Inquiry into Mental Defectives and Sexual Offenders

Method By Which the Causes of the Present and Past Conditions of Organic Nature Are to Be Discovered — the Origination of Living Beings By: Thomas Henry Huxley

Mezzerow Loves Company By: Floyd L. Wallace

Military Instructors Manual By: J. P. (James Perry) Cole

Millennium By: Everett B. Cole

Minor Detail By: Jack Sharkey

Miscellanea Curiosa, Vol 1 By: Edmond Halley

Miscellaneous Mathematical Constants By: Simon Plouffe

Modern Women and What is Said of Them A Reprint of A Series of Articles in the Saturday Review (1868) By: Elizabeth Lynn Linton

Modus Vivendi By: John Berryman

Moment of Truth By: Basil Wells

Monkey On His Back By: Charles V. De Vet

Monopolies and the People By: Charles Whiting Baker

Moral Principles and Medical Practice The Basis of Medical Jurisprudence By: Charles Coppens

Morale A Story of the War of 1941-43 By: Murray Leinster

Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry By: Albert Pike

More Hunting Wasps By: Jean-Henri Fabre

More Letters of Charles Darwin By: Charles Darwin

More Science From an Easy Chair By: E. Ray (Edwin Ray) Lankester