Here is the answer I received from our Finance Dept:
I scan the check, and attribute it to the foundation that sent the check. That is all that we do in F1.
Then we make a copy of the letter enclosed, and every few months I take those copies, and mail out an acknowledgement letter to them, and file away a copy.
In Him,
Debbie Doell
Fellowship One Coordinator
Cornerstone Fellowship 348 North Canyons Parkway Livermore, CA 94551
www.cornerstoneweb.org