- Natural History Museum, London: NHM Catkey-418595
- Natural History Museum, London: NHM Catkey-418595
Hopes that Birch has recovered from his illness, and urges him to take care of his health. Suggests collecting localities that would be healthier and provides collecting tips. Also mentions Edward Bagnall Poulton, T. D. A. Cockerel, George Hampson and W. J. Kaye.