A few months ago, news that Usagi Yojimbo creator Stan Sakai had come upon financial difficulties due to the ongoing illness of his wife, Sharon, led the Cartoon Art Professional Society to step up and help. Now, Dark Horse Comics is pitching in, too.

To celebrate 30 years of Usagi, the publisher has assembled a murderer's row of artists including Adam Hughes, Art Adams, Dave Gibbons, Geof Darrow, Walter Simonson, Mike Mignola and Tim Sale for a new oversized hardcover called The Sakai Project. All the proceed from the book, which comes out July 23, will go to the Sakais.

The full list of artists Dark Horse provided in a press release names the following as contributors:

Alain Mauricet, Alex Maleev, Allison Sohn, Andy Grenen, Batton Lash, Bill Morrison, Brian Ching & Michael Atiyeh, Brian Michael Bendis, Carlos D’anda & Gabe Eltaeb, Chris Scalf, Dan Panosian, David Mack, Doug Wheatley, Edgar Delgad , Eric Powell, Gabriel Hardman, Howard Chaykin, Jan Duursema, Jeff Smith, Joyce Chin, Mark Crilley, Matt Groening, Matt Wagner, Michael Allred, Michael Avon Oeming, Michael Golden, Mike Kunkel, Oscar Martin, Paul Gulacy, Paul Renaud, Phil Yeh, Richard Corben, Scott Shaw, Sergio Aragonés, Stephanie Gladden, Tom Mandrake, Tom Richmond and William Stout.

Dark Horse is actually still taking art submissions for the book until February 20. Interested industry professionals can contact the publisher at sakaiproject@darkhorse.com.