Ray Martin (1918-1988) was a composer, arranger, and conductor for BBC-TV, Columbia Records, RCA, and motion pictures. The collection contains the original manuscript scores in the composer's hand, and are numbered 1 through 342. There are nearly 600 pieces, including the unnumbered songs written for twenty-one of Martin's ablums.

The Floyd M. Martinson Collection consists primarily of reproductions of secondary source material used by Dr. Martinson in his research regarding the family and the development of sexuality in children.

The Donald H. McGill Collection consists of just a few of Mr. McGill’s keepsakes which include a letter written by McGill and posted from France in March of 1945, a sheet of head shots, and his Presidential Commission in the United States Army.

Charles McHaney was a U.S. Marine stationed in Tientsin, China during and after World War II. While in Tientsin, he took numerous photographs, the subjects of which are primarily his fellow Marines, local geography, and local culture. The collection consists mostly of these photographs, with some additional print materials related to the U.S. Marine presence in Tientsin in the late 1940s.

In this letter to Horatio McPherson, Mrs. Isaac Vanbert McPherson describes family life in Los Angeles in 1870.