In 1970 the first solid Pure Prairie League lineup was Fuller, McGrail, George Ed Powell, Phil Stokes on bass and Robin Suskind on guitar and mandola, with steel guitar player Call joining the band later that year.
In 1971 McGrail and Stokes left the band to rehearse with Bill Bartlett (of Beechwood Farm, Ram Jam, and The Lemon Pipers fame).