In case it is of interest, the wonderful, handwriting primer, "Gregg Handwriting" by Mr. Gregg and Mary Louise Champion is for sale at the UK Amazon site:
I have this book and thoroughly enjoy it.
The explanations and examples will be dearly familiar to a shorthand writer.
It was published by the Gregg Publishing Company in Great Britain, and if I remember correctly, in 1931. (I'm not at home to check the date.)
Mary Louise Champion was one of the top penmen of the day, and had written a penmanship text a few years earlier. It can be read at the IAMPETH site: