Correspondence re early experiments at the Wellcome Physiological Research Laboratories, Brockwell Hall Includes correspondence with Dr W C Fowler and A C Rawlinson, former technicians in the Wellcome Physiological Research Laboratories at Brockwell Hall, re early experiments in the Laboratories involving diptheria toxin/antitoxin; copies of 'Observations recently reported to Sir Henry Dale, as having been made by technicians working in the Wellcome Physiological Laboratories, before he himself arrived there in 1904'; correspondence relating to an obituary of A T Glenny; copy obituary notice of Dr W C Fowler (1967) and reprint by Fowler (1952); memoir by Dale of the student apprentices employed at the Laboratories in 1906 when he became Director 1952-1967