Aerial photo of the week: Boston, 1860 + reprise

First aerial photograph in the US, by J. W. Black, Oct 13, 1860. Ambrotype print from a wet-plate negative. Old South Meeting House is at the middle left. Washington Street cuts across lower third. Central Wharf (now Aquarium) top left.  My “same view” photograph made Oct 13, 2012; same time (1:30 PM) same altitude (1200). more to come on “How this was done”