Presses in the 1910 era were often just as large as the ones we have today. They were slower, but only when comparing types.
Here's a Hoe company press from 1879 that has a max image area of 35.25 x 24.
http://www.howardironworks.org/colle...ress-1879.html
This article - Page 62 if the link doesn't go directly to the page- Give details of Hoe company display at the St Louis worlds fair in 1904. They mention a Hoe #3 Lithographic press that's got a 31 1/2 x 43 bed.
https://books.google.com/books?id=is...0press&f=false
I'll post pics later of some other articles from about then, one an ad showing the stone size of a Hoe number 5 as 40x60 the other a brief mention of ALC installing a Hoe two color litho press in about 1897.
Steve B