The "original" Gemstone File is over 1000 pages of handwritten notes, out of which many have written partial summaries:

http://jfk.hood.edu/Collection/Weisberg%20Subject%20Index%20Files%20Original/G%20Disk/Gemstone%20File%20A%20Skeleton%20File%20To/Item%2004.pdf

One Book made out of The Gemstone File:

https://archive.org/details/InsideTheGemstoneFile

I don't know where the "17 pages" came from.

The "original" Gemstone File is over 1000 pages of handwritten note, out of which many have written partial summaries:

http://jfk.hood.edu/Collection/Weisberg%20Subject%20Index%20Files%20Original/G%20Disk/Gemstone%20File%20A%20Skeleton%20File%20To/Item%2004.pdf

One Book made out of The Gemstone File:

https://archive.org/details/InsideTheGemstoneFile

I don't know where the "17 pages" came from.