I guess they need to add Ray's street photos to these to complete the series:) I haven't seen it yet, but the article says it is available at the National Gallery of Art through Aug 5 in Washington, DC.
“I Spy: Photography and the Theater of the Street, 1938-2010” is devoted to six photographers who explored ways to photograph surreptitiously, taking “the mask” off subjects to see what people look like when they think no one is watching.
National Gallery’s ‘I Spy’ examines the assumed reality of candid photography - The Washington Post
‘I Spy’ at National Gallery: The art of candid photography - The Washington Post
Nearly One Million Old NYC Photos Released Online, Thanks To Municipal Archives
Nearly One Million Old NYC Photos Released Online, Thanks To Municipal Archives: Gothamist
Archive link is very slow...