John London was a friend of Mike's from Texas in the pre-Monkees era who later traveled with Nez to Los Angeles in 1964. He later became Mike's stand-in on the television series and would occasionally play bass guitar on Monkees recordings. London also co-wrote "Don't Call on Me" with Nez, which appeared on The Monkees' fourth album, Pisces, Aquarius, Capricorn & Jones Ltd. After The Monkees, Mike asked John to join him in the First National Band.
In 1967, John London became a member of the Lewis & Clarke Expedition, a country rock group that also included songwriter Michael Martin Murphey, an old friend of Mike's who composed "What Am I Doing Hangin' 'Round?" for The Monkees. (Lewis & Clarke were labelmates of The Monkees, too, both being signed to Colgems Records.) This article, from the March 1968 issue of Flip magazine, examines John and the Lewis & Clarke Expedition.
"Mike & Micky Show" in 2019