Was doing some research for a new forum member and stumbled upon this page which lists a few dozen engineer units. I noticed they also had a reference for the 540th. Hmmmm!
http://www.ibiblio.org/pub/academic/history/marshall/military/mil_hist_inst/e/engr3c.asc
Looks like you would have to contact this address and ask them how to obtain any of the listed materials on the page above. (I DO NOT currently know where these materials are currently kept. - Maybe it's at the university.)
http://www.ibiblio.org/help/contact/
CB #3456, Manning Hall
UNC-Chapel Hill
Chapel Hill, North Carolina 27599-3456
Marion J Chard
Proud Daughter of Walter 'Monday' Poniedzialek
540th Combat Engineer - H&S Company
It boogles the mind how many army units there were!
Maj Todd O. USMC, Retired
Grandson of LTC John O'Brien
Oh me too.
Marion J Chard
Proud Daughter of Walter 'Monday' Poniedzialek
540th Combat Engineer - H&S Company