In the early days of the HDMA, I accepted files for the website through drop.io, a service later bought by Facebook. Using drop.io was very easy, and, if you chose, anonymous. This means I received many files without identifying information or accompanying email addresses. Ahh…the early internet.
I referred to them as the “lost maps,” and I still have a folder with these random drawings. These are two of the best. The map above was easily identifiable as the Mill Hill district of London, and, with a little extra research, the map below was determined to be Doha, Qatar.