Charles Osgood Postcard Set

Charles Horatio Osgood was a photographer out of Galesburg.  His Washington postcards date from around 1907, which is notable for two reasons.  One, it is very early in the history of his business; two, it is very early in the growth of postcard popularity.  His Washington postcards are numbered, with the exception of the Heyl Farm illustration, which means they were probably taken on the same day.  Below are the examples we are aware of.  Based on the numbering, it's clear there are many more.