the symbol fills come from an old product for Cultured Stone called StoneCAD:
http://www.stonecad.com
You might be able to poke around this site to complete your collection.
Not sure that anything is maintained there. I tried sending a note for assistance and got a call from a Cultured Stone Rep instead.
Think Like a Spec Writer
AC4.55 through 27 / USA AC27-5060 USA
Rhino 8 Mac
MacOS 14.6