These are amazing. Take your time studying them because there are so many incredible details in them. Click on them for larger versions.

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Below is one showing the waterfront. This one is pretty cool.

Here’s one showing upper Georgetown and a little of Rock Creek. You’ll also notice there is no bridge over Q St.
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Here’s a view up what is Wisconsin Ave.

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This shows western Georgetown up to the college.

Source: Library of Congress
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Take a look through all of these maps. See what you can find and add your comments below. A lot of the buildings still stand today and have been repurposed.