1888 Map of muskegon on parchment

[backdrop001]

Can anyone tell me the worth of this, it's a muskegon map dated 1888 and is on I'm thinking the material is parchment.

http://backdrop001.zoto.com/user/image_det...oaded-desc/0-30

http://backdrop001.zoto.com/user/image_det...oaded-desc/0-30

http://backdrop001.zoto.com/user/image_det...oaded-desc/0-30

http://backdrop001.zoto.com/user/image_det...oaded-desc/0-30