From the credits page:
The offices of the Digest are located on Deneb in the Deneb sector of the Imperium. The Digest is available throughout the frontier sectors of Corridor, Deneb, Spinward Marches, Trojan Reach, and the Reft Sector (spinward).
The date of Volume 1, Number 1 is 152-1111, or the 152nd day of the 1111th year of the Imperium. The Travellers' Digest is published quarterly by Digest Group Publications and is devoted exclusively to Traveller™.
Cover artist: Joe D. Fugate Sr.