Four BOOKS on South African birds: “Roberts' Birds of Southern Africa” by Gordon Lindsay Maclean, fifth edition, re-printed, 1985, hard cover with dust jacket, writing on the first blank page in black pen ink; “Roberts Birds of South Africa” revised by G.R. McLachlan and R. Liversidge, third edition, first impression, 1970, hard cover with dust jacket; “Roberts Birds of South Africa” revised by G.R. McLachlan and R. Liversidge, fourth edition, first impression, 1978, hard cover with dust jacket; “Birds of the Southern Third of Africa”, African handbook of birds, series II, volume I, by C.W. Mackworth-Praed and the late Captain C.H.B. Grant, first edition, 1962, hard cover, no dust jacket. (4)