I am wondering where I can purchase original drawings, prints or other
materials by Russell Porter (1871-1949). Porter was an US architect,
designer, scientist, explorer and basically an amazing person and I
hope you enjoy finding out more about him.  Here's some examples of
his illustration: http://www.weertman.com/bruce/porter/

The ideal answer would point me to several actual items for sale
and/or to galleries/auctions most likely to offer Mr. Porter's work. I
am not sure how to categorize his work (since he was not part of a
movement or anything), but I would guess, early-mid 1900's
illustration and design, which is why I chose the "Arts>>Books and
Literature" category.  But  it might as well have been "Arts>>Visual
Arts" or "Science>>Instruments" or "Miscellaneous."