Why did Lewis and Clark's maps have holes in them?

Question

I think there was a specific reason, but I need to make sure there was one, and what the reason actually is.

Answer 1

When you say "holes", do you mean an actual hole in the map such as the one shown in this link:

http://www.pbs.org/lewisandclark/archive/mapsolrd_b.html

If you look carefully, the holes formed where there is a fold line in the map.

My guess would just be poor preservation. After all, it's not like Lewis and Clark kept the maps flat during their journeys, nor did others after they're return.

To know for sure, I would recommend contacting one of the preservation societies that are involved with the Lewis and Clark Expedition, such as:

Beinecke Rare Book and Manuscript Library at Yale University at [phone] or Saturdays [phone] (they have possession of the above map)

Answer 2

Are you referring to physical holes, or blank spots on the map?

For the blank spots I would guess that was places that they didn't actually visit, and therefore could not fill in on the map.

Answer 3

Because Freemont had already been there, done that, and when L & C found out, having run out of toilet paper they began to share?

Answer 4

For a thumb hole?

Answer 5

cause they were old