Keulemans, J. G. (John Gerrard), 1842-1912

Three birds: one male, two females, on branches in the jungle. Inscription: MC "2/5" on reverse "Hornbills/Aceros/cassidix/celebres/early draft of plate 16?".

Two birds facing each other in trees, black and white markings. Great Pied Hornbill - India - Watercolor for Elliot, D.G."A Monograph of the Bucerofidae or Family Hornbills" Privately published, 18 c. plate 6. Inscription: MC "1/3" on reverse "Hornbills - Gt. Pied/ Early draft of plate 6?/ Dichornos, bicornus/ bicornis."

Three birds: one male, two females - one female in nest in hollow tree, two other birds on branches. Inscription: LM "2/5" on reverse "Hornbills Plate 7/Rufous Hornbill - Philip/ hydrororax."

Three birds sitting on branches, sex? - blue-black bodies with white and black tails in jungle. Inscription: On reverse "Hornbills/ Early draft of Plate 4?/ Rhinoceros Hornbill."

Three birds standing on ground with mountains in background. Inscription: On reverse "Hornbills Plate 1/Bucoruus abyssinicus."

Silvery-cheeked Hornbill. Two birds: male and female, sitting on a branch facing left. Inscription: MC "2/5" on reverse "Hornbills 7 Bycanistes breuis = cristatus/ Africa/Early draft of plate 26."

Two birds: male and female facing each other, sitting on branches in the jungle. Inscription: MC "2/5" on reverse "8/ Obsurus (plicatus)/ - Ryticeros undulatus - Indian/Early draft of plate 35 - Hornbills."

Two birds: one male, one female, male has green berry in mouth, facing each other. Inscription: On reverse "Hornbills/ 9/ Early draft of plate 52/ Tockus hemprichii."