How Ceramics Were Made
Click on the video image below to visit the National Film Preservation Foundation website where you can watch the 14-minute video of the 1925 film titled Uncommon Clay.
The film does not address flower frogs in particular, but covers the creation of ceramic objects from the first step of preparing the clay to the last step of firing the glaze. It first shows primitive methods used by Native Americans, then those used by Rookwood Pottery, the premier American art pottery company.
The film features shapes created by hand, but also shows the use of moulds as would be used for most flower frogs.