Check out the Olmstead-Rhode paper cited in footnote 14. That was my main source for such specifics. I only have a minute at the moment or I would look myself and offer a better answer—I hope to come back to this. (My recollection is that they initially had hard tires and were difficult to maneuver?)
Check out the Olmstead-Rhode paper cited in footnote 14. That was my main source for such specifics. I only have a minute at the moment or I would look myself and offer a better answer—I hope to come back to this. (My recollection is that they initially had hard tires and were difficult to maneuver?)