Bill,

You might consider joining the "Maps and Supplement" group here at the 'Corner.  There are many discussions about maps there.  Anyone can read them, but you have to join in order to comment or post a new discussion.

Note: there is another "Maps and Supplement" group that is empty, you need to find the right one.

Tom

Just go to the group's main page HERE, and there should be an option to join.  I know it took some members had a hard time joining, but they all got on eventually.

William,

Thank you for posting & sharing all these images of maps + diagrams from the 1910's! I love that era of design and visual appearance, as well as being a key time in exploration and discovery brought to the masses....

     ~ Scott S.