Today on the Internet Archive, I uploaded a color scan of the Gregg Shorthand Phrase Book that matches the 1916 Preanniversary Gregg Shorthand manual. It was first published in 1924.
This 1924 book entered the public domain as soon as it was first published. There is a 1924 copyright notice in the book. However, there is no record of a copyright registration or renewal with the US Copyright Office. If this book had been properly registered and renewed, it would have entered the public domain on January 1, 2020.
This color scan was created from a clean copy of this book with shorthand plates that are not faded.
Here is the link: