Interesting interview here with a docent (former B-36 S/Sgt gunner) at Pima Air Museum (which displays the last B-36 built).
A few interesting anecdotes:
In 1953, a 32-hour recce mission over Russia at 44,000 ft with impunity as a Mig-15 could only get to 38,000 ft > 40,000 ft.
Taking off as #9 - 100+ other B-36s lined up behind - with a nuke on board - when an inexperienced pilot mistakenly opened the bomb doors. A gunner hand cranked the doors shut as the electrics hadn't warmed up enough to close them and they didn't want to be responsible for screwing up the MITO launch.
385 built.
Convair B-36J Peacemaker on display in Tucson, Arizona near Davis-Monthan AFB
