Pearl Harbor Attack Veterans Post Office Box 112 Southampton, Massachusetts 01073-0112
Pearl Harbor Survivors Association Florida Chapter 225 Parnell Street Merritt Island, Florida 32953-4713
These organizations were, of course, formed after the war but, despite the fact that he was KIA, you might get lucky and locate someone who served with him.
The fact that he was present during the Japanese attack and that he was later killed in the Solomon Islands, suggests he was a member of the 25th Infantry Division - at least at the time of his death. The 25th was at Schofield Barracks when the Japanese attacked and reinforced (later replaced) 1st Marine Division at Guadalcanal. In light of this, you might also contact
25th Infantry Division Association Post Office Box 746 Rocklin, California 95677-0746
Also, you can order his deceased file. You'll find practical instructions at Message #2112. Go back to the Main Page, enter "2112" in the box in the upper right corner marked, "Jump to #_____" then click on "Go". This file may contain a wealth of information.