The Christmas Spirit

In 1994, Kitchen Sink Comics released The Christmas Spirit, which collected Eisner's nigh annual "Christmas Spirit" Stories.

The Outer Space Spirit

In 1983, Kitchen Sink Comics released The Outer Space Spirit, collecting the final Spirit stories from its original run.

Note: These stories are also included in Volume 24 of The Spirit Archives:

And in the last 3 issues of Kitchen Sink's 1983 Post-War Spirit reprints:

The Spirit Casebook

In 1990, Kitchen Sink Comics released The Spirit Casebook a softcover collection of some of Eisner's best Spirit Sections. It included the following Stories: "Two Lives", "Ten Minutes", "Gerhard Shnobble", "Meet P'Gell",  "Life Below", "The Killer", "Wild Rice", "Death of Autumn Mews",  "Christmas Spirit of 1948", "Lorelei Rox", "The Last Hand", "The Visitor", "The Fox at Bay", "The Embezzler", "Rat Tat, The Toy Machine Gun", "Sand Saref", "Bring in Sand Saref", "Satin"

The Spirit:The New Adventures

In 1998, Kitchen Sink Press released The Spirit: The New Adventures. An 8 issue limted series featuring all new Spirit Stories by some of the most talented names in the business!
(and YES the covers for issues 2 and 4 are by Eisner!)

All 8 issues were reprinted in The Spirit Archives Vol. 27 (Dark Horse Publishing)

Will Eisner's 3D Classics: The Spirit!

In 1985, Kitchen Sink released a 1-Shot featuring a few selected Spirit Stories in 3D!

Here are a few photos collected from around the web:

Quality Comics' Reprints

 Quality Comics(Plastic man, The Clock, Kid Eternity), published the first official Spirit Reprints in the pages of Police Comics,  however in 1944, Quality gave the spirit his own magazine.
It ran from 1944-1950 and reprinted War and Post-War Spirits (the first covers are by Lou Fine, a few are by Reed Crandell, and a few of the later covers are by Eisner.)

The Spirit Color Albums!

Between 1981-1983, Kitchen Sink Press released 3 hardcover editions reprinting some notable Post-War Spirit stories, however they were recolored by an unnamed danish colorist.
(Note: The cover for the first volume is from Kitchen sink's Spirit Magazine.
 The covers for the second and third volumes were designed and colored by Pete Poplaski.)

For Comparison, Here are the original colors:

And here are the color album colors:

The Origin Years

In 1992, after Kitchen Sink finished reprinting the Post-War Spirits in chronological order , they began reprinting the Pre-War spirits in The Spirit: The Origin Years , However it only lasted 10 issues.