I think looking at the print group numbers all together helps bring them into perspective.
A couple of thoughts to go along with this information:
-ATC knew in 1909 that there would be at least two series. They selected PG1 and PG2 in early 1909. The original PG1 and PG2 total 350 subjects as advertised.
-I do not believe ATC/ALC considered error corrections or team updates new subjects. We as collectors checklist them that way. Examples: Magie/Magee and Dahlen Boston/Brooklyn were a single corrected or updated subject. Not two as we classify them.
