I love this reproduction page out of a newsprint. It has so many wonderful sketches.. of both riding aside and astride, but what I want you to focus on in right in the center, where the rider is riding his horse, but long lining another - which is called riding Tandem.
Well, now look at this! Riding Tandem and Sidesaddle at the walk!
Oh be still my heart - here we have Sidesaddle, Tandem at the canter.. and look at the amazing riding suit!
OHHHHH - (squeeling!!) One handed!!!
I have died and gone to heaven... Tandem with 2 horses!!!!(although I don't think this is sidesaddle) OH MY Gosh!! It just does not get any better than this!