'Knute' - Thanks for finding this article. The Springfield Armory photos are great.

Actually, there are three installments on Springfield Armory in this collection of 'American Machinist' Articles. (I can't claim to understand the page numbering system; it seems to change or 'flip').

The first article - U.S. Armory at Springfield I, as you noted, was published March 22, 1900, pages 41-265 to 49-273.

The second article - U.S. Armory at Springfield II, was published March 29, 1900, starting 288-26 to 29-291 or 291-29 (?).

The third article - U.S. Armory at Springfield III, was published April 5, 1900, starting page 312-26 or 26-312 (?).

FWIW - I found it best to ignore page numbers and just scroll to date of article.