3 Notebooks listing crossings in maize, done by Margaret Blackwood and continued by Dr Olive Lawson. They are labled: 1 Maize Field Book I 1951 to 1967 Dr M Blackwood, Botany School, University of Melbourne. Maize Crosses. Made and Ears Collected... 2 Field Book Maize II 1968 to 1974 & continued by O.B. Lawson... 3 Maize Pedigree Book. Dr Blackwood's Maize Planting Book. 1949 [f] ..."Record of Maize kernels (seeds planted each year & the parents they came from." Pasted in 15 July 1959 memo GJCuming to MB soil samp