WWII 1942-1945 Signal Heavy Construction Battalion Aviation Need Info!

Hi, I wasn't sure where exactly this post belonged so I'm hoping one of the moderators could kindly move it to the correct spot. 
 
First of all I'd like to make it known that I have requested records from NARA both St. Louis and College Park, Maxwell AFB, Carlisle Barracks, attempted the Signal Center historian (who hasn't returned calls or emails) and have contacted various other History societies and museums.  Although Maxwell AFB, and NARA do have a few sets of records Nara for one wants to charge me literally over $500 for copies of 500 pages and I'm not able to spend that kind of money so I'm hoping maybe some of you can maybe help me.
 
The battalion was a non divisional Army Air Forces Signal Corp Battalion who traveled between the different divisions specifically at least at some point working with the 3rd,5th,8th,9th,12th,15th army and air forces.  I did receive their TAGO files from CECOM Carlisle Barricks so I do have a basic timeline of their deployment.  I was also lucky enough to find a book that was published in 2000 called Through The Eyes of a Signal Corpman; A diary of Charles Bowman (which is absolutely amazing FYI) and Bowman was in the 435th so that gives me a little more detail but I'm looking for more specific about their campaigns and especially hopefully a roster and PICTURES! I'd like to know as much as I can about the entire battalion, but even more specifically if at all possible Company B and/or soldier Earl Taylor Fairchild lineman238 from Oklahoma born 7/7/1917-5/1/1993 Serial # 38 268 941 trained at Camp Crowder 9/42-12/45.  Any help anyone is willing to give would be so much appreciated you have no idea!! Fairchild was my grandfather who died when i was 6 and all of his belongings and memories from his service were stolen when I was 4 including the letters that made my grandma fall in love with him and marry him 7 days after returning after not 1 single date!
 
Thanks
Micah Smith