I just read the story on Pacific Wrecks which also gives the Squadron and Group information.
C-47-DL, USAAF Serial No. 41-38601, 6th TCS, 374thTCG, 5th AF, shot down November 26, 1942, Dobodura, New Guinea.
As has been stated MACR's did not come into use until May 1943 with some earlier losses documented by the unit on a MACR. Obviously the loss of this C-47 was not so documented. I ran into the same issue with a B-26 lost in North Africa in March 1943. However, the Group or Squadron may have a mission or after action report which might have some of the same information as the MACR. Write or e-mail to the U.S. Air Force Historical Research Agency (AFHRA) at Maxwell AFB, Alabama. Give them as much information as possible that you already have, i.e. unit, aircraft type, model number, USAAF serial number, date, crew names, etc. They may have the unit reports on microfilm. I received an after action report written by the 17th Bomb group on the day the B-26 I was researching was lost. It gave a lot of the mission information including info on the loss of the bomber with a crew list. Below is the web address. If that doesn't work just search AFHRA and you will get a link to the website. www.au.af.mil/au/afhra