Anything prior to 1929 is pre-anniversary. There are a few listed below for future reference.
Anniversary Manaul (Anni) --
Lots of theory in each lesson. Rules are given for each theory. Explanation of why outlines are written. Unit homework includes a little reading and writing plus some longhand to be written in shorthand. No transcript or key given to student in this pdf manual (see below as the site as the transcript). Short units (assignments). This is the manual that is used on this site for each lesson.
All the Anniversary lessons are on the Angelfishy site without downloading the PDF if you prefer that. Here is the link to the first unit and then you can find the others through the links on the right side.
After each lesson the bottom lists additional links to more practice as well as the transcription key.
Additional books are listed below for your reference. Some are Pre-Anniversary, those are printed prior to 1929 when the Anniversary Manual was published. However, you can use those for additional study after (some theory is different, but it's pretty close), or just for light reading.
Most of these Gregg novels listed above scanned by libraries are the pre-Anniversary editions. In the US, books published before 1923 are in the public domain. Anniversary shorthand didn't come out until 1929, so libraries will not scan the Anniversary versions and distribute them to the public. I have not found the green paperback Anniversary editions of the Gregg novels and short stories scanned on library web sites. Those Anniversary editions were written by Winnifred Kenna-Richmond. They have larger print and neater shorthand. Of the 11 novels and short stories published by Gregg, 2 of them did not get re-written for Anniversary shorthand. "Alice in Wonderland" and "Sign of the Four" only exist in pre-Anniversary editions, even through they continued to published them after Anniversary was adopted. I would guess that they were too long, and re-writing them would have been a major undertaking.
If someone finds the official dictionary available online, could you post it? Thanks.
It's on the Gregg Shorthand (Angelfishy) site. I thought it was posted in this thread, but I guess not. It's under the Anniversary, Reference Material. Available as a PDF you can view on line or download.
"Gregg Shorthand had achieved the most extraordinary success ever attained by any system in the history of shorthand." John Robert Gregg, 1922