Those are amazing! Hard to believe how many variants of the Delta (and Atlas) there were! Surprising to think that the Titan sheet may well have the fewest number of variants on it.
A little appetizer from my Thor-Delta derived work: the Japanese N-I and N-II rockets. The N-I was essentially a Delta-M first stage with a Mitsubishi LE-3 upper stage augmented by three Castor2 boosters. The N-II was based on the Delta 1910 with an upgraded upper-stage and a Japanese built engine ...
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