Carrie Brown : Murder In The East River Hotel

The shadows show you the shape of the adjoined units.

The units were all about 20 feet so this would show 3 adjoining units with a passageway to the courtyard in 1876 that was filled in prior to 1891.
(Correction: The East River Hotel was 14 and 16 Catherine Slip so it would be the first two units as a "double decker" so you could say it was 2 units in the picture along with 18. 18 would be the one set back without the awning so we're looking at the whitish corner of the hotel in the image.)

The Hotel was around for only about the first 20 30 year period of photography before being demolished. As you said, Howard, no one was going to lug the heavy equipment up the four flights of stairs to photograph the murder scene. Neither that nor would they lug the camera equipment to Catherine Slip and Water St just to photograph the Hotel. So this is probably about as good as it's going to get. Thanks to the "Panorama" guy.

As soon as they said panorama I knew there had to be more too it. The photographer, Joshua Biel, wouldn't stop his panorama shots before the southernmost point of Manhattan and, keeping the Manhattan Tower of the Brooklyn bridge centered would mean there was more to the photo going the other way too.