I have an update on the following films:
“Cow Punching for Cupid” (Exhibitor's Herald, September 11, 1926) was likely renamed "Red Hot Hoofs".
R94 Series, manufactured in the USA, issued in 1929, two cards:
R94 "Overnight Rider" is probably “Avenging Rider”.
R94 "Hearts and Hoofs" is probably “Red Hot Hoofs”.
If anyone has any additional information about these three film cards, please contact me at firstname.lastname@example.org. Thank you!