I was surfing around and found this video which includes some Conjunto history:
The following is the info posted on the You Tube page:
Mr. Rey Avila, President, The Texas Conjunto Music Hall Of Fame, informs visitors about various Conjunto artists, including the Jimenz family. Accordion player Flaco Jimenez was a member of The Texas Tornados, and as such played with the late Freddy Fender and Doug Sahm. Mr. Avila also discusses the history of Conjunto music.