1. Blade Bookmark Museum number: 1-205733 Object class: Blades (stone tools) Collector: Francis A. Riddell and Mrs. D. Riddell Collection place: CA-Las-71, Lassen County, California Collection date: unknown
2. Blade fragment Bookmark Museum number: 1-205715 Object class: Blades (stone tools) and Fragments (object portions) Collector: Francis A. Riddell and Mrs. D. Riddell Collection place: CA-Las-68, Secret Valley, Lassen County Collection date: unknown
3. Chip Bookmark Museum number: 1-205702 Object class: Flakes (lithics) Collector: Francis A. Riddell and Mrs. D. Riddell Collection place: CA-Las-67, Lassen County, California Collection date: unknown
4. Mano Bookmark Museum number: 1-205627 Object class: Ground stone and Manos (food mills) Collector: Francis A. Riddell and Mrs. D. Riddell Collection place: CA-Las-3, Lassen County, California
5. Mano Bookmark Museum number: 1-205626 Object class: Ground stone and Manos (food mills) Collector: Francis A. Riddell and Mrs. D. Riddell Collection place: CA-Las-3, Lassen County, California
6. Mano Bookmark Museum number: 1-205628 Object class: Ground stone and Manos (food mills) Collector: Francis A. Riddell and Mrs. D. Riddell Collection place: CA-Las-3, Lassen County, California
7. Mano Bookmark Museum number: 1-205625 Object class: Ground stone and Manos (food mills) Collector: Francis A. Riddell and Mrs. D. Riddell Collection place: CA-Las-3, Lassen County, California
8. Mano Bookmark Museum number: 1-205630 Object class: Ground stone and Manos (food mills) Collector: Francis A. Riddell and Mrs. D. Riddell Collection place: CA-Las-3, Lassen County, California
9. Mano Bookmark Museum number: 1-205629 Object class: Ground stone and Manos (food mills) Collector: Francis A. Riddell and Mrs. D. Riddell Collection place: CA-Las-3, Lassen County, California
10. Mano fragment Bookmark Museum number: 1-205721 Object class: Ground stone and Manos (food mills) Collector: Francis A. Riddell and Mrs. D. Riddell Collection place: CA-Las-68, Secret Valley, Lassen County Collection date: unknown