Broken Vase
First, "The Broken Vase", a rare fetish film by Paris photographer Jacques Biederer. A simple scenario of a clumsy maid getting a hand spanking from her mistress. Biederer's Ostra Studio made a few non-pornographic films of this type. He is best known for his elegant, erotic photographs of fetishistic subjects: bondage, whipping, domination, spanking, and role-play.

The second film clip, "Mrs. and her Maid", from an unknown source, is of the same subject. A woman tears up a love letter that has just arrived. Then she spanks the maid for dropping a tray (hard to tell as a few seconds of film have been lost). This ends in a long lesbian kiss, and more. 

Dressage au Fouet
"Dressage au Fouet" (Raising with the Whip), a remarkable, rare, purely fetishistic film (not porn) of a mistress disciplining her slave.

(Blooper: You can glimpse a still cameraman on the right side for a second, possibly Biederer himself).

Sous les caresses du martinet
One of the rarest (and most cheerful) S&M films ever made.
"Sous Les Caresses du Martinet" (Under the Caresses of the Martinet) features two nice girls who make sado-masochism look as innocent and adorable as a pillow fight. The attitude is playful, consensual, and very French. A notable counterpoint to the usual sinister S/M stereotypes. Perhaps this film gets it right while all the others got it wrong. From fetish photographer Jacques Biederer at his Ostra Studio.