Date:
March 20, 1950
Location: New York City, New York, United States
This
cylindrical-appearing UFO was photographed over New York
City on March 20, 1950. The photographer's name was deleted
from Project Blue Book's files -- as were most names when
the material was finally declassified and released. Upon
investigating the report, Project Grudge officially labeled
it: "the moon"!

Source:
Knight
This
cylindrical-appearing UFO was photographed over New York
City on March 20, 1950. The photographer's name was deleted
from Project Blue Book's files -- as were most names when
the material was finally declassified and released. Upon
investigating the report, Project Grudge officially labeled
it: "the moon"! Some ufologists have speculated
that tubular objects of this sort may be "mother
ships," purportedly capable of taking on and
discharging smaller "craft" in stacks, poker-chip
fashion.
Source:
http://www.ufoevidence.org/cases/case407.htm