In 1969 King hired Jack Calmes as his manager, who secured him an appearance at the 1969 Texas Pop Festival, alongside Led Zeppelin and others, and this led to King's being signed to Leon Russell's new label, Shelter Records.
Calmes got him booked at the 1969 Texas Pop Festival[http://www.texaspopfestival.com], alongside Led Zeppelin and others, and got him signed to Leon Russell's new label, Shelter Records.