You beat me. As I recall, the Fieseler Fi-156 Storch stalled around 28 MPH.
My first job out of high school was fueling planes at the island of a busy metro. (Anything to be close to aircraft.)
I always opened on Saturday mornings at 7 AM. One Saturday, right after opening, a group of three immaculate Boeing-Stearman biplanes, painted as 1930s PT-17 or N2S (Chromate Orange), did a tight-formation, low-and-slow fly-by on the deck right over the airfield.
It was a foggy morning, barely VFR, and hearing, then seeing, the three float over the otherwise quiet, empty airport, as close to stall as they could get, was a surreal experience I will never forget.
The takeoff run for the Storch was even shorter than normal at the field behind the Campo Imperatore Hotel. Of course, the first part of the flight was straight down after it went over the cliff with a rotund Mussolini, a hefty Skorzeny and the pilot in the two seater plane.