Every Boy's Book of Outer Space Stories has 283 pages.
The Complete Book of Outer Space has 144 pages.
Mr. Monk in Outer Space has 288 pages.
The Inner Reaches of Outer Space has 160 pages.
The Outer Reaches has 342 pages.
The Thama Stories has 136 pages.
The Lost Stories has 580 pages.
Ealdwood Stories has 464 pages.
Grandfather Stories has 312 pages.
Deathbird Stories has 334 pages.
The Turning - stories - has 317 pages.
The Stories of Ibis has 465 pages.
There are 160 pages in Captain Underpants book 3, titled "Captain Underpants and the Invasion of the Incredibly Naughty Cafeteria Ladies from Outer Space."