Mirage Publishing Usagi Yojimbo #9  Slavers, Part 1 (with back-up story "Nilson 2199") August 1994 (Click on the thumbnails to view full size cover art)

I guess you'd better order it now... No letters column, but an ad to subscribe to Usagi Yojimbo from Mirage Publishing.

Usagi Yojimbo, including all prominent characters featured in the stories and the distinctive likenesses thereof are trademarks of Stan Sakai and Usagi Studios. Usagi Yojimbo is a registered trademark of Stan Sakai.  Any similarities between characters, names, persons, and/or institutions in this book and any living, dead, or fictional characters, names, persons, and/or institutions is not intended and if exists is purely coincidental.