About the un-tagged map; I too had some concerns. But, when I uploaded it into Roll20, dropped it on the VTT, and stretched it out, things lined up pretty well.
[spoiler] Set your map size to 37W x 50H and you will have 1 row of border all around the map to play with the stretching. {/spoiler]
I did appreciate that the maps are at the end, instead of being a page inserted into a break in the box text. HINT ;-)