This data release contains deep seismic reflection profiles CC-1 and CC-2, which extend eastward from within the California Coast Ranges across the Great Valley and into the Sierran foothills, with a combined east-west length of about 140 km at about the latitude of the town of Merced (37.25° north latitude). The records are processed to 15 seconds two-way time and thus extend deep into the lithosphere as well as capturing detail in the shallow crust. Field data (no longer available) were collected in 1982-85 with vibrator source, an 800-channel, split-spread receiver array using SIGN-BIT technology, and a maximum offset of 12.2 km. Line CC-1 extends from Franciscan Complex of the eastern Coast Ranges east to Merced in the Great Valley; line CC-2 is offset 12.75 km to the south with a 10.8 km overlap of CC-1 and extends east into batholithic rocks of the Sierran Foothills. The included data consist of (1) raster images of stacked and migrated profiles and (2) the ground location of their reconstruction lines and points as scans of 1:4,000-scale paper plots and their digital representations.