In an effort to help identify unknown sketch cards, here's a sample of each artists signature

Kyle Babbitt	Len Bellinger	Joseph Booth	Dennis Budd
Jeff Chandler	Justin Chung	Katie Cook	Joe Corroney
Renae De Liz	Thomas Denamrk	Otto Dieffenbach	Ray Dillon
Colleen Doran	Dave Dorman	Michael Duron	Brent Engstrom
Darla Ecklund	Davide Fabbri	Roberto Flores	Dave Fox
Otis Frampton	Tess Fowler	Matthew Goodmanson	Grant Gould
Kevin Graham	Paul Gutierrez	Patrick Hamill	Gabriel Hernandez
Jessica Hickman	Thomas Hodges	James Hodgkins	Josh Howard
Mary Huang	Lee Kohse	Jim Kyle	Mike Lilly
Leah Mangue	John McCrea	Brandon McKinney	Steven Miller
Rich Molinelli	Joanne Mutch	Jake Myler	Steve Oatney
Jon Ocampo	Mike Oeming	William O'Neill	Sean Pence
Connie Persampieri	Keith Phillips	Amy Pronovost	David Rabbitte
Juan Carlos Ramos	Walter Rice	Brian Rood	Howard Shum
Allison Sohn	Cat Staggs	Robert Teranishi	Jerry Vanderstelt
Christian Dalla Vecchia	Ryan Waterhouse	John Watkins-Chow	Sarah Wilkinson
Russell Walks	Jeff Zapata	Chuck Zsolnai