The two known O.T. Frasch images in the range from 1000 to 1009 show the conservatory (greenhouse) in Volunteer Park, Seattle. The building still exists today. Both cards are unsigned, but one has Otto's imprint on the back and of course the writing on each is very distinctive.
Each caption has a typographical error. Otto made mistakes on captions from time to time.1005 - Concervatory Volunteer Park
A selected image from the range 1000-1009: