http://books.google.com/books?id=t68VAAAAIAAJ&pg=RA1-PA42&dq=%22gregg+shorthand%22&lr=&as_brr=1&cd=58#v=onepage&q=%22gregg%20shorthand%22&f=false
See: Construction of a Scale of Knowledge, Gregg Shorthand System
There are other Gregg Shorthand entries in the book. On online search will show them.
Also available as pdf file.
Labels: history, research