1974, United States. Dept. of Commerce, Commerce Today, page 36:
A leading food processing firm is interested in obtaining licenses for all types of snack foods incorporating proprietary technology, such as vacuum-packed "stack chips."
1978, Joan Dye Gussow, The Feeding Web: Issues in Nutritional Ecology, page 151:
Pet Inc.'s Laura Scudder division, a West Coast region chipper, has revamped its Dittos brand stack chips.