The New Naturalist Library is a series of over one hundred books first issued in Great Britain by William Collins in 1945 and continuing into the 1990's with it's peak in the 50's and 60's. The series covers every aspect of British Natural History from Moles to Measles. Clifford and Rosemary Ellis painted most of the dustwrappers.
The series is worth acquiring simply for these works of art. From the subtlety of the Swallowtails for Butterflies (the first title published in 1945) to the dramatic and terrifying mole for the monograph The Mole.
The original aim was:"To interest the general reader in the wild life of Britain by recapturing the inquiring spirit of the old naturalists."