Bob,
The best references I found on the B-24's involvement in that battle were:
1) "Guadalcanal and the Birth of the Thirteenth Air Force", Army Air Force Historical Studies #35, 1945. It is available on line and this battle is covered on p. 180+.
2) "Up the Slot" by Samuel I Walker, p. 75+
3) "The Long Rangers: A Diary of the 307th Bombardment Group (H)", by Britt, Sam S., Jr., Baton Rouge, Louisiana: The Reprint Company, Publishers, (Spartansburg, SC), 1990. p. 19+
I contacted AFHRA via email to get some more information on the B-24 and this was their reply:
"Thank you for your e-mail. The MACR number is 559. However, the
microfiche is almost totally unreadable. You will need to ask the
National Archives to copy the originals for you (www.archives.gov).
I was able to decipher the crew list:
Pilot Capt Harold G. McNeese
Co-pilot 2nd Lt Harvey R. Vanderslice
Nav 2nd Lt Wesley M. Carroll
Bomb 2nd Lt Donald DeClergue
Eng SSgt Roy N Lund
Asst Eng SSgt William H. Adams
Radio SSgt Robert O. Smith
Asst Rad Sgt Lawrence C. Averitt
Gunner Sgt Elton H. Hartt"
They indicate the MACR is 559, not the 561 you mention. Since I have not seen either one I do not know which is correct but AFHRA gave me the 559 number. I would suggest you obtain the MACR as it might contain more information.
Finally, I tracked down and contacted the last surviving member of the crew of that B-24 (Navigator Wesley Carroll) and talked with him on the phone. On March 20 I wrote him and on March 27, 2007 he phoned me. We talked for a few minutes. He said his position as Navigator in the B-24 prevented him from seeing much of the battle. The only other aircraft he saw during the battle was one P-40. He did not know (or did not remember) the names of the local islands, so when I asked him about specifics of where the B-24 flew he could not provide much help. He called the area Cholin(SP?) Harbor. He did indicate that the long account in the book "Up The Slot" was accurate. He had not seen my article so I promised to send him a copy. I sent it to him on March 28 with a map of the Bougainville Straight and asked him to plot the B-24's path. When I had not heard back from him by April 12 I sent a follow up postcard. I never got a reply to either letter. I would suggest you contact him.
Contact me at
paroales@ionet.net and I'll give you his address.
If you come across anything on Lt. Robert Rist in your search I would appreciate hearing about it.
Good luck,
Paul