The "White Typeset" Postcard Set

In 1911, a postcard set was sold to Washingtonians without any branding on it whatsoever.  It was hoped that 20,000 of these would be mailed out by Washingtonians as a tool to advertise the city.  We are calling it the "white typeset" set because of the distinguishable text on the front of each card.  Known examples are seen below.