Director King Vidor and actress Colleen Moore on location in northern California for the snow scenes for the American drama film <i><a href="https://en.wikipedia.org/wiki/The_Sky_Pilot" class="extiw" title="en:The Sky Pilot">The Sky Pilot</a></i> (1921), on page 65 of the May 28, 1921 <i>Exhibitors Herald</i>.
Cathrine Curtis Corporation / First National Pictures
1921-05-28
<a rel="nofollow" class="external text" href="https://archive.org/details/exhibitorsherald12exhi_0"><i>Exhibitors Herald</i> (Apr. - Jun. 1921)</a> on the Internet Archive