Correspondence regarding the loan of items from the Royal Greenwich Observatory, including the following papers:

Correspondence on the loan of the chronometer Harrison 4 to the United States Navy, 1961 and 1963.

Correspondence on the loan of the Shortt Clock (Sidereal) and the Shortt 49 Clock (Mean Time) to Western Australia, 1960-1961.

Correspondence on the continuation of the loan of the unifiliar magnetometer PIC 111 in use at Halley Bay, 1959.

Correspondence on the Cambridge Eclipse Expedition of 1958, concerning two chronometer watches, Vacheron and Constantin Nos 54895 and 54909.

Correspondence on the Observatory's Dent sidereal timepiece of 1870, 1957.