Empire of Ivory has 384 pages.
The Ivory Trail has 213 pages.
The Ivory Tower has 348 pages.
Empire of the Atom has 192 pages.
Relic of Empire has 626 pages.
Evening's Empire has 352 pages.
Dark Empire I has 152 pages.
The Risen Empire has 304 pages.
Deep Empire has 349 pages.
Daughter of the Empire has 394 pages.
The Scarlet Empire has 400 pages.
Naked Empire has 608 pages.
Empire Star has 102 pages.