Abstract: A portable ladder for attachment to truck and trailer beds having stake or post pockets spaced about the outer periphery of the truck or trailer frame, including an attachment plate having a post sized for fitting into one of the stake or post pockets and a ladder section pivotally connected to the attachment plate by a pair of links or hinges, to permit the ladder section to be pivotally moved downwardly over the edge of the truck or trailer bed into a use position for climbing and to be pivotally moved upwardly over the truck or trailer bed into a stowage position.