Lot of Set of Six Vintage Airplane Photographs [Snapshots, Aviation, Michigan] by Anon - 1935

Lot of six vintage snapshots featuring airplanes, one of which looks similar to the Spirit of St. Louis. One is pencil dated 1935 of the back, and all have the stamp of Sills Studio. These came out of a lot of photos from a Muskegon, Michigan family. The pics measure 9.6 by 7.3 cm. All are in very good condition, with one with a light corner crease.