Hello,
Chris Shores "Air War for Burma" published by Grub Street.
it is the 3rd in the Bloody Shambles series.
As I have book to hand so - noted on pages -
48,Notes combat on Wednesday 30th December 1942 by 2Lt. William E. DiStefano claimed a Zero s/d east of Lashio airfield and 1Lt. Mortimer D. Marks claimed a Zero damaged, No Japanese record of such encounters discovered.
49,Notes Saturday 2nd January 1943 Capt Jeffrey O. Wellborn claimed a "I-45" twin engined fighter s/d in the Bhamo/Myitkyina area.
423 Notes that the 23rd FG did not operate over Burma but was frequently in action against the JAAF units based there. Further that the 16th Squadron was attached from the 51st Fg in Assam until the latter unit moved to China. Aldo that in July/August 1943 the 449th Squadron was formed with P-38's but operated as an independent unit until the arrival of the 51st FG in China.
Not much but has a wealth of info on the overall situation and units involved.
There is also the
www.armyairforces.com/forums website that may be of some help to you.
Alex