Model, scale 1:20, Percival Mew Gull aircraft G-AFAA (1937) (model made 1977) Model of Percival Mew Gull aircraft G-AFAA (1937) 1937; 1977
Porch Index of Communicative Ability; an assessment test for the measurement of aphasic behaviour in adults 1967
Harpenden pocket stadiometer sent out to Ludlow Boys' School as part of a series of nationwide measurements 1972-3