Description | 'Please prepare electros of the blocks illustrating the two papers by Messrs Sheppard and Mees "On the Theory of Photographic Processes" (Proceedings [of the Royal Society] Vol [Volume] 74, p. 447: and Proceedings, Vol. 75 A, p. 217) and send them with your account to: - S. E. Sheppard, Esq., Ravensmere, Bromley Road, Catford, S.E.'. |