Where can I watch The Liver Birds in United States?

The Liver Birds is a British sitcom set in the city of Liverpool, in the north-west of England, which aired on BBC1 from 1969 to 1978, and again in 1996. It was created by Carla Lane and Myra Taylor. These two Liverpudlian writers had met at a local writers club and decided to pool their talents. Having been invited to London by Michael Mills and asked to write about two young women sharing a flat, Mills brought in sitcom expert Sydney Lotterby to work with the writing team. Lotterby had previously worked with Eric Sykes, Sheila Hancock and on The Likely Lads. Carla Lane in fact wrote most of the episodes, Taylor co-writing only the first two series. The pilot was shown as an episode of Comedy Playhouse, the BBC's breeding ground for sitcoms, in April 1969.