[R-390] Tool holders

[R390rcvr@aol.com]

Dear Barry and list:

According to the info I have culled from various kind list members, while 
working on a R-390A spotters guide,
the last contract to have tool holders was 23137-PC-60, the 1960 EAC 
contract. The one known exception to this is the 5 Fowler units produced in 
1986. They apparently were based on an earlier standard, and had tool holders.

I would be more than happy to hear from anyone who has more info on this 
point.

Randy Stout