Telescope mounted on west side of Detroit Observatory grounds, student observatory in background

2 scans, front and back, sharing same hs#. Front is hs# alone, back is hs#.2of2

Stereograph card: James & Annette Watson with telescope in front of the Detroit Observatory, ca. 1870

2 scans sharing same hs #, one with suffix 1of2 for full stereograph, 2of2 for crop to right side image only