ATF investigators display weapons seized for violations of the Gun Control Act in the evidence room of IRS National Office in Washington, D.C.
Federal Bureau of Investigation
<a rel="nofollow" class="external text" href="https://leb.fbi.gov/file-repository/archives/march-1971.pdf">FBI Law Enforcement Bulletin</a>, March 1971, Vol. 40, Number 3, Page 20