Edwards AFB B-52 takes X-15 aloft under its wing, is "cut loose over Mojave Desert" landed by Scott Crossfield (2) Connecticut - Groton CT launch of USS George Washington Polaris sub (partial newsreel)
universal newsreel
1959-06-11
<a rel="nofollow" class="external autonumber" href="https://archive.org/details/1959-06-11_X-15_Aloft">[1]</a>