when did wheelchair curling become a sport?
The curling wand, or curling iron was first invented by Marcel Grateau in 1890.The commercialization of the curling wand can however be accredited to Hiram Maxim who first obtained the patent for the wand.
They didn't exist in 1926. The first curling irons came out in the 1960's.
Madem C.J. Walker
they went from rocks to metal
No. Curling was introduced (actually, re-introduced, since it was a part of the first Winter Olympics) in the 1998 Nagano Olympics.
No, curling is a Scottish game which became popular in areas of Canada settled by Scots, and particularly on the cold, long winters of the prairies.