Journalist Drew Pearson in the White House Garden with President Lyndon Johnson, April 1964.
<bdi><a href="https://en.wikipedia.org/wiki/en:Cecil_W._Stoughton" class="extiw" title="w:en:Cecil W. Stoughton"><span title="American photographer">Cecil W. Stoughton</span></a>
</bdi>
1964-04-16
LBJ :: Online Photo Archive Search, who explicitly state that the photos are in the public domain: <a rel="nofollow" class="external free" href="http://www.lbjlibrary.org/collections/photo-archive.html">http://www.lbjlibrary.org/collections/photo-archive.html</a>