Red photographic developing tray Designer (Person) Unknown Manufacturer Unknown Date 1930 - 1939 (circa)
Green photographic developing tray Designer (Person) Unknown Manufacturer Unknown Date 1930 - 1939 (circa)
Ilford adjustable developing tank Designer (Person) Unknown Manufacturer Ilford Date 1940 - 1949 (circa)
Paterson Major II developing tank Designer (Person) Unknown Manufacturer RF Hunter Manufactured for Paterson Products Date 1960 - 1965 (circa)