A survey of the city of Philadelphia and its environs shewing the several works constructed by His Majesty's troops, under the command of Sir <a href="https://en.wikipedia.org/wiki/William_Howe" class="extiw" title="w:William Howe">William Howe</a>, since their possession of that city 26th. September 1777, comprehending likewise the attacks against <a href="https://en.wikipedia.org/wiki/Fort_Mifflin" class="extiw" title="w:Fort Mifflin">Fort Mifflin</a> on Mud Island, and until it's reduction, 16th November 1777.
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1777
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