These pictures needless to say they brought back memories.
Up until I was promoted into management most of the time didn't seem like work.

I was on the TRE-2 crew when we tested the Redstone engine that put John Glen ( Friendship 7 ) in orbit.

I was assigned as the Leadman on TRE-1 second shift at the start of the H-1 R&D and ended up on the day shift Leadman.
The instability problem was one of many. The H-1 engine powered the Saturn vehicle in a cluster of 8 engines, which had to start all at the same time. They started with two squibs on a solid propellant gas generator and bootstrapped to provide hot gas driving the turban for main propellant pumps during main stage. It was some time while working TRE-1, that I started thinking it was up to me to get us to the moon.
It was good times with the promotion to supervision in the TRE Area. I knew the engines and all the men that made up the crews, and we were working three shifts.
Things were to good to last. I was transferred to the Bowl Area, Liquid Hydrogen, J-2 engine, Major Test Stand Conversions, Contractors.
This was work, and we didn't have an area Super, we reported to our hard nosed Group Leader, actually he was a good guy.
The Bowl area J-2 program was the first time ever that liquid hydrogen had been used in such a huge amount, thousands gallons at a time.
Part of the J-2 program included a demonstration simulated altitude shut down and restart on VTS-3A. Other J-2 R&D testing on VTS-3B.
VTS-2 ran J-2 production testing. Large engine tests support for the X-15 were ran on HTS.

Things started to slow down after J-2. I was assigned to CTL-3 second shift running Aero Spike engine tests

Next was Bravo Area second shift running stability testing on the RS-18 Lunar assent engine.

Then Third shift for SSFL and out the gate in 1969. And on to Caterpillar.
At least this is how I think I remember the period.