Hi Jim
A very nice write up and description of what must have been a fun hike.  Now, if I were just a little younger ...
With respect to the historic maps.  Diana and I are currently hosting (and anticipate continuing to host) this collection of maps.  However, all credit for assembling this collection belongs to Jeffrey McMurtrie.  We took it over when it was clear that it would no longer be available at the old algonquinmap site.  While I have not discussed this with Jeffrey, perhaps he might be interested in hosting this repository at https://mapsbyjeff.com/ at sometime in the future.  (I had always assumed that Jeffrey would get back in the game).