Coolidge, Harold J.; A Revision of the Genus Gorilla. Memoir Harv. Mus. Comp. Zoology, 1929. & The Indo-Chinese Forest Ox or Kouprey. Memoir Harv. Mus. Comp. Zoology, 1940. Quarto, pp. 90, 21 plates, 2 maps, 19 text figures. & pp. 110, 11 plates, 12 text figures.
The two works are bound as a set in modern buckram with gilt titles and original title wraps for both works bound in. Binding is tight and pristine with owners name (Craig Black) in gilt on lower spine edge. The text is very clean with tear to first title wrap repaired with archival tape and owners name penned on title wrap. In very good condition.
The first of these two works is Coolridge classic systematic description and classification of the genus Gorilla. His second study is a similar classic and is the first systematic and comparative description of the forest ox from Indo-China.