University of Nebraska
University of Nebraska: Great Plains Rat Snake
The nonpoisonous Great Plains Rat Snake is sometimes called the Corn Snake. The University of Nebraska presents more information including a brief description and photo.
Other
Kingsnake.com: Ratsnake
Kingsnake.com discusses the Ratsnake and each of its five subspecies. Select the Texas Ratsnake, Black Ratsnake, Yellow Ratsnake, Everglades Ratsnake, or the Grey Ratsnake to find additional information. Photo included.