In post #23, the last video; what is the machine that is pulling the reaper?
It's an "Alldog", a multi-equipment carrier from LANZ, the company, which build the "Bulldog"-tractor. This tractors where build from 1953 to 1957 (?), but the used engines weren't strong enough.
Dan is right, the Alldog is carrying a potato-digger, type AVR1 (Alldog-Vorrats-Roder 1). With this machines we digged potatoes at Luxembourgh last year (as seen on our YT-channel).