Pick the network a television show originally showed on. In the case of a television show that began on one network, and was picked up by a second one, we're looking for the first network. All shows began during the 1970s.
1. The Streets of San Francisco
2. The Bionic Woman
3. The Waltons
4. Police Woman
5. The Mary Tyler Moore Show
6. B.J. and the Bear
7. Vega$
8. Happy Days
9. The Ropers
10. "Owen Marshall, Counselor at Law"