UFO Magazine Article:
“WASHINGTON'S BLIPS – 
‘Somethings’ over the capital are traced on radar”, 
4 August 1952 (Life, New York City, New York) 
(Google Books)

This is an article on the July 1952 Washington, D.C., UFO sightings:

https://books.google.com/books?id=YFYEAAAAMBAJ&lpg=PP1&dq=life+magazine&pg=PA39&redir_esc=y#v=onepage&q&f=true

Aerial view of Washington, D.C. (2.bp.blogspot.com)
(2.bp.blogspot.com photo)