File talk:Pittsburgh Volume 3 Plate 1.jpg
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Dating issue
[edit]The original source claims a date of 1900, but if the Blockhouse is owned by the DAR, it dates the map to 1902 at the earliest. The complex owned by Frick may post-date 1902, pushing the date even further ahead, but I am not sure. In addition, at the top, the map says it's a "supplement", suggesting that it is an update to the 1900 work. —Notyourbroom (talk) 16:01, 28 July 2011 (UTC)