>>1868775Here’s my shelf. All the vertical blue books on the left are from the USMM federal academy curriculum and most of the USCG test question database draws directly from the materials within.
The horizontal book on the top is a personal favorite of mine.
“Fireman NAVEDTRA 10520-G”
Unfortunately it’s been out of print for decades but it’s THE BEST one volume illustrated book for teaching basic oiler knowledge of pipes and valves and pumps. Find a copy if you can.