Yes played at the Inglewood Forum on October 5 & 6th ’78, however, collectorsmusic.com claims “The vinyl release Periphet (or Peripet) on Impossible Recordworks released in 1979 claimed to be from this show, but is really sourced from the evening show at Wembley, London on October 28th and broadcast on KBFH. “.
If that were really the case though, why would allmusic.com rate this much less favorable, calling it a “mediocre-sounding [audience recording]” when comparing it with a vinyl set that was definitely sourced from the KBFH broadcast from the Wembley Arena in London [The “In The Round” bootleg (YS 1600), which was erroneously attributed to the LA Forum (in a repeat of the Police Vinyl Villains scenario, where a UK radio broadcast was claimed to have come from a local concert)]?
I believe that collectorsmusic.com is wrong here.
From a list: Yes – Periphet [Impossible Recordworks 2CD] live at the Inglewood Forum, Los Angeles, Oct 5 1978. Ex AUD. A Mike Millard recording? [According to my compiled Mike Millard taped shows list, he did tape both shows, so it is possible that one of his traded tapes ended up on here.]