One of the coolest Flickr sets I've seen in a while. Marc Shur's Sign Language features hundreds of old/retro signs.
Ziegfeld Girls were the showgirls from Florenz Ziegfeld's theater shows known as the Ziegfeld Follies, which were based on the Folies Bergère of Paris.
This set features the portraits of Alfred Cheney Johnston, who is known for taking portraits of the Ziegfield girls as well as other actors/actresses of the 1920s/1930s. If you are interested in the stories of these girls or want to see more portraits of Ziegfield girls, you should get Jazz Age Beauties: The Lost Collection of Ziegfeld Photographer Alfred Cheney Johnston from Amazon.
You might think long exposure photography is a relatively new phenomenon, but you would be dead wrong. Harold Edgerton began experimenting with long exposure photos as early as 1938. He developed his style using a stroboscope, better known as a strobe light. He took his photos using a strobe along with the camera's flash to capture the motions of his subjects. The results are these awesome photos!
Up until fairly recently, even Eugene de Salignac's own family did not know much about him. The family received a call from the Municipal Archives of the City of New York and discovered Eugene was the photographer of thousands of images. While he worked for the Department of Bridges, De Salignac shot the construction of the Manhattan and Queensboro Bridges among other things. This is just a small record of some of his magnificent photos. If you like these, you can get a book of his photos on Amazon.