The Litchfield-French papers consist of 414 items ranging in date from February 15, 1862, to 1918, though the bulk of the collection lies between 1862 and 1899. The collection includes 335 letters, 60 documents, and several clippings, photographs, and receipts. Approximately 280 of the letters cover the period of Allyne Litchfield's Civil War service, including letters from Litchfield to his wife, letters among and between the Litchfield and Carver families (especially Lysander Carver and Susan Carver), and other correspondence pertaining to Allyne Litchfield. Roy French either wrote or received around 65 of the letters, primarily during the 1890s.
Between early 1863 and Litchfield's capture in March 1864, he wrote near-daily letters to his wife, describing movements, battles, and camp-life, and expressing his love for her. On May 9, 1863, he described the exhaustion of cavalry forces, led by George Stoneman, to whom the 7th Michigan sent reinforcements: "you can imagine perhaps the condition of men and horses after being saddled and ridding [sic] for 7 days. One can see the bare bones on the backs of some of them." His letters of July 6 and 7, 1863, are almost entirely devoted to his experiences at Gettysburg, and contain his accounts of his horse falling on him after it was shot in battle, and his regiment's extremely heavy losses. At times, Litchfield's correspondence also reveals his managerial side, as in a letter from Michigan Governor Austin Blair, recounting an anonymous complaint about "Col. Man" (almost certainly Col. William D. Mann) and requesting Litchfield's perspective on the matter (June 18, 1863). Also of interest is a letter of December 19, 1863, in which Litchfield detailed having dinner with 24-year old George Armstrong Custer and expressed his admiration for him.
After his capture, Litchfield wrote infrequently; however, ,in his letter of March 16, 1864, he described his conditions: "I have been kept in an 8x12 feet cell… 4 negro soldiers with us." More prevalent are letters to Susan Litchfield from family members, expressing support for her and suggesting solace in religion. The few letters to his wife, Litchfield generally communicated an optimistic attitude and gratitude for his good health, as in his letter of November 4, 1865, from prison in Columbia, South Carolina: "I have shelter, still retain my old overcoat and have plenty of blankets, which I am sorry to say is not the case with most of the officers."
Very little correspondence exists between 1865 and 1893. In the latter year, Roy A. French began writing a series of letters to his relatives, which became more frequent when he joined the military. In 1898, he commenced writing to his future wife, Almira "Myra" French (daughter of Allyne and Susan French). He described "monotonous" camp life at Camp Townsend in Peekskill, New York (July 15, 1898), his voyage to Puerto Rico on the Chester , during which he was very seasick, and his observations of Ponce, Puerto Rico, including the people, their modes of transportation, and the wild fruits that he saw (July 15, 1898).
On September 25, 1898, he wrote from "Camp Starvation" ("that is what the regulars call this camp because we are fed so poorly"). He reported prolonged health problems, from which he would die in 1911.
The 60 documents and miscellaneous items include newspaper clippings, military and family documents (such as a will, a passport, and a wedding invitation), a wallet, and a metal nameplate. Of particular interest is a manuscript copy of a letter of recommendation for Litchfield by George A. Custer. The copy is dated February 24, 1881. Other items document Litchfield's service in India to some extent.