The address of the El Paso De Robles Area Pioneer Museum is: 2010 Riverside Ave, Paso Robles, CA 93446-1758
The address of the El Paso De Robles Area Historical Society is: Po Box 2875, Paso Robles, CA 93447
Assuming you take U.S. Higway 101, Greenfield, CA is halfway between Paso Robles, CA and Hollister CA?
The address of the Adelaida Historical Foundation is: 9001 Chimney Rock Rd, Paso Robles, CA 93446
It is 240 miles according to Google Maps.
The address of the Estrella Warbird Museum is: 4251 Dry Creek Rd, Paso Robles, CA 93446-9540
The address of the Museum Of Natural Science Inc is: Po Box 2211, Paso Robles, CA 93447
Paso Robles, CA
There is one destination called the Paso Robles Inn (http://www.pasoroblesinn.com/) that is located in Paso Robles, CA, however it doesn't appear to be part of a chain. I would recommend checking with Expedia or Trip Advisor to find a recommended hotel in Dallas.
The address of the Paso Robles Public Library is: 1000 Spring St., Paso Robles, 93446 2207
232 miles. http://maps.google.com/maps?f=d&source=s_d&saddr=paso+robles,+ca&daddr=fairfield,+CA&hl=en&geocode=&mra=ls&sll=36.97946,-121.417785&sspn=4.975489,8.4375&ie=UTF8&z=7
The web address of the Paso Robles Childrens Museum is: http://www.pasokids.org