Conversation so far:
What were Michael Martin Murphey's Austin/Outlaw country years?
In 1971, Murphey returned to Texas and became part of the so-called Outlaw country movement.
Did he work with Merle Haggard?
CANNOTANSWER.
Did he record any albums at this time?
In 1972, Johnston produced Murphey's first album Geronimo's Cadillac in Nashville, Tennessee.
Was the album successful?
The title track was released as a single, and reached the Top 40 on the US pop charts.
Were there any other singles from the album?
In 1973, Murphey followed up with the album Cosmic Cowboy Souvenir, which continued the urban cowboy theme of the first album.

Question: Were there singles from that album?
Self-contained rewrite: Were there singles from Cosmic Cowboy Souvenir?