These double-spring hinges are ideal for securing maps and documents. These are military surplus, medical, standard page-size-boards. Canvas pencil holders, sewn by Kathy Wilhite, are aluminum-riveted to the cover.
"EL CLASICO" Mapping Clipboard: This model is a hard masonite board with a steel spring-hinge.
"EL ALUMINO" Mapping Clipboard: This model is made of an aluminum board with a steel spring-hinge.
VSSAC "EL VERDE" Notebook: Horizontally-ruled, 5x8 inch hardbound volumes. Not waterproof.