From one of the Robert N. Dennis collection of stereoscopes, here’s an unusual view of Cohoes. It’s unusual in part because it’s in color, and in part because it’s not of the Cohoes Falls, but instead features the Harmony Mills complex (lower left, and I believe not fully built) and the railroad bridge to Waterford that still stands today. The Erie Canal runs through the middle foreground. It would appear that this photograph was taken somewhere up Manor Avenue, and then handpainted to present a rare color stereograph.
You can almost replicate the view shown here with Google Earth. Union College has a similar view, though it doesn’t show the railroad bridge or the background hills.