The found bow has been reunited with it owner. Thank you, Everyone, for your help!
Dennis & Josh Johnson found the bow, Phaen Pittman from Performance Archery forwarded the post to Lars Bell, who sent a description & picture of his bow to the Johnsons. 

Attention Bowhunters!! Bow Found Near Mt. Laguna

A compound bow with attached quiver was found in the Mt. Laguna area, ~500 yards south of the Mt. Laguna Store, on Sunday, December 23rd. To confirm if this is your bow, please contact the San Diego Archers (info@SanDiegoArchers.com), describe the brand and model of the bow (and arrows, too).
Thank you to the Johnson Family for recovering the bow & trying to track down the owner!