New Naturalists. Numbers 21-40, London: Collins, 1952-8. 20 volumes, 8vo, original green cloth, dust jackets, a little light spotting to top edges of text-blocks and to rear panels of a few dust jackets, number 20 with errata slip, 26 with bookplate of Irene D. Poulter, 28 with ink-stamp of R. S. R. Fitter to front free endpaper, 29, 33, 34, 35 and 39 with vulture bookplate of J. V. Stephens (qty: 20) Bernhard & Loe NN21A-40A (number 31 is in the secondary binding, NN31A-B2). First editions of numbers 21-40 in the New Naturalist series, including The Folklore of Birds (39) and Bumblebees (40).