There is no unified index for all of the issues of Coast Artillery Journal, alas. As noted there is an index for each year at the end of the Nov-Dec issue.
A quick check turned up two articles in 1944 on antiaircraft units in the SWPA but the units are not identified by number (no doubt because of wartime security issues):
Mar-Apr 1944 "An AA Battalion in SWPA" - unit identified only as a former National Guard unit with almost two hundred years of history behind it"
Jan-Feb 1944 "Antiaircraft Artillery in New Guinea" - unit identified only as an automatic weapons battalion which arrived at Port Moresby on May 3, 1942
I posted the link to this post war Army history elsewhere. I am sure the 101st is mentioned.
Antiaircraft artillery activities in the Pacific war.
This report is a summary of the operations of antiaircraft artillery from December 1941 until August 1945 against the enemy in the Pacific theater. Engagements with aircraft, protection to airfields, supply...
(downloads in 13 parts)