From USCIS FOIA Search Training Manual
A couple months ago, fed up with the randomness of Freedom of Information Act rote rejection letters from certain agencies--the State Department is the worst and USCIS had just lost a remand responsive to my appeal--I got off the phone with the USCIS employee and FOIA-d their FOIA manuals. (UPDATE 9/3/2016-link fixed!)
The response, uploaded here, is over 4200 pages.
1 of 6 COW-2016-000509, pp. 1-750.
2 of 6 COW-2016-000509, pp. 751-1499.
3 of 6 COW-2016-000509, pp. 1500-2249.
4 of 6 COW-2016-000509, pp. 2250-2999.
5 of 6 COW-2016-000509, pp. 3000-3749.
6 of 6 COW-2016-000509, pp. 3750-end.
The information could be helpful for FOIA litigation (next up: other agencies) and also provides insights from actual agency examples that might be helpful with due process litigation. I'm still scrolling through it...