1939-1944 Freshwater Biological Association Publications, amateur bound volumes of No. 1 Corixadae - lesser water boatman, No.2 Plecoptera - stoneflies, No.4 British water bugs, No.5 freshwater Cladocera water fly, No.7 Epmemerotera Mayflies, No.8 aquatic Megalotera and Neuroptera Alder flies and Lace wings, No.9 the British Simuliidae - black flies