7th Marines were stationed in Samoa prior to being deployed to Guadalcanal in late 1942. 1st Marine Division Association may be able to assist in locating him (or someone who remembers him).
22d Marines was stationed in Samoa prior to the formation of the 1st Marine Brigade (Provisional); later became an element of 6th Marine Division. If the above is ineffective try 6th Marine division Association.
Addresses for either or both can be found on the 'net.