Consists primarily of love letters (1923-1925) by Lindsay to Elizabeth Mann Wills and other letters (1921, 1923-1925) by him to Francis Charles MacDonald. Furthermore, there is at least one letter each to Mrs. Edmund Kemper Broadus (1921), Howard L. Hughes (1916, 1925), Jessie Kalmbah (1903), and Elizabeth Mann Wills' mother (1924), as well as two letters by Elizabeth Connor Lindsay to Howard L. Hughes (1925, 1930). Other materials in the collection include seven poetry manuscripts (1903, 1924), a pen-and-ink drawing (undated), three photographs (undated), and a clipping from The New Republic featuring the poems "These are the Young," "The Rhinoceros and the Butterfly," and "Nancy Hanks, Mother of Abraham Lincoln."

The following standard abbreviations, or their variations, are used to identify materials in this collection: ALS = autograph letter signed, TLS = typed letter signed, ACS = autograph card signed, ANs = autograph notes, AMsS = autograph manuscript signed, and TMsS = typed manuscript signed.