Logan Omer Osborn was born in Chandlersville, Ohio, on 20 October 1890, to George and Mary Louella (Starr) Osborn. He taught school in Blue Rock Township, Ohio, for several years to earn his way to the Oberlin Business College (enrolled 1911). He attended Oberlin College after graduation from the business college (1914). He worked his way through college by various means, including teaching at the local business college. To keep his expenses to a minimum, he lived part-time in the loft above the museum section and worked as a guard in the Carnegie library. He was president of the class of '18 during his sophomore year.

In the spring of 1917 Osborn withdrew from Oberlin College to begin a grape growing project in California. The following June he enlisted in the U.S. Ambulance Corps, in the unit organized in Oberlin, Ohio. There he joined other Oberlin students, including Robert Maynard Hutchins (Honorary War Membership, OC '19), William R. Hutchins, Ernest G. Yocom (OC '13), and Gordon A. Curtis (OC '21). This unit, and Osborn in particular, distinguished themselves in Italy; they were decorated by the Italian government with the "Cross for Merit in War" for bravery. He was also granted Honorary War Membership in the class of 1918.

Upon his return to the U.S. in 1919, and following a bout with pneumonia, Osborn re-enrolled in Oberlin College, completing his on-campus course work in June of 1920.

From 1920 through 1941, Osborn worked as a real estate agent. He married Rose E. Keith on September 19, 1931; at various points, during the years of 1932-34, he was hospitalized for tuberculosis. Rose Osborn died of complications after giving birth to a daughter, Mary Keith Osborn, in 1940; the child was raised by her maternal aunt. The following year, 1941, found Osborn briefly in the ranching business, after which time he made use of his business college skills by becoming an accountant for the U.S. Maritime Commission (1942-1945). Osborn was remarried on June 14, 1942 to Dorothy E. Wright (1894-1965, OC '17 ).

It was at the request of his wife, Dorothy, that Osborn's Oberlin College records were finally completed; his grape growing project deemed sufficient to complete his agriculture requirement, and his diploma was granted in 1942 after payment of the seven dollar diploma fee.

In 1945 Osborn became the Public Relations Representative of the Oakland, California Chamber of Commerce. His interests included membership in the Scottish Rite of Freemasonry--Oakland Consistory MRS 32 Degree, the Aahmes Temple of the Shrine in Oakland, the Oberlin Lodge #380, the Oberlin Alumni Club, and a Development Campaign Worker.

Osborn died May 25, 1965 of tuberculosis of the bone. About five months later, on November 16, 1965, Dorothy Osborn died.

A photograph and biographical information about Logan Omer Osborn are included in the digital collection “Oberlin College and Military Service in World War I,” presented by the Oberlin College Archives.