1. Map of West Mersea showing location of Royal Observer Corps observation posts. Some were in place 1938 and it is thought there was a later R.O.C. Monitoring ... Date: 1 July 1998 Image ID TUP_CWA_001
2. Diagram of a Royal Observer Corps Monitoring Post. It is thought one of these was built between 1960 and 1968, under West Mersea sea front, in line with Empress ... Date: c1960 Image ID TUP_CWA_003