Crystal Mask has 255 pages.
Confessions of a Mask has 254 pages.
The Mask of Cthulhu has 201 pages.
The Mask of Apollo has 366 pages.
The Mask - novel - has 320 pages.
The Crystal Horde has 254 pages.
The Crystal Frontier has 280 pages.
The Crystal World has 221 pages.
The Crystal City has 416 pages.
Irish Crystal has 304 pages.
The Crystal Star has 309 pages.
Crystal Express has 264 pages.
A Crystal Age has 287 pages.