For a Family Research project, I am looking for any relevant information on the 104th Combat Engineers (Pacific 1940 -1945). In particular, I am looking for a copy of the book: The History of the 104th Combat Engineers 1942-45 by Edward Cook. Thank you in advance for any help!
Welcome to the forum. Just to get you started have you checked here : Inquiries to CMH | U.S. Army Center of Military History. Be patient and more knowledgeable folks will be along.
Not much help for someone looking for a book with '1942-45' in title to send them a link to a book on a WWI unit. Unless there's a prize for quickest response that I am unaware of, can't see the value. For our OP, who asked a legitimate question, contact your local library with this info and ask them to get you up to speed on interlibrary Loan. Libraries are not required to provide, but request is free (and if they find a library willing to provide, free or cheap to receive), so worth an ask. Good luck. History of the 104th Combat Engineers : Pacific campaign: 1942-1945 | WorldCat.org
I forgot to suggest that the reader should mine the footnotes and source for happenstance data. I need to put that in my sig.
There's a copy at the US Army War College in Carlisle, PA. It's available to borrow. Do a Google search for it. There are several libraries that have it. An Inter-Library Loan might be your best bet.
This lists all available histories on the 104th Engineers: 104th Engineer Regiment.pdf (armyheritage.org) This link is by the 104th Engineers association. You might want to contact them. 104th Engineer Association (tripod.com) I suspect that Cook's book was a very limited edition and finding a copy will be very much a stroke of luck.