Short answers, pulled from the story.
The original album was released as a vinyl LP on the 4th of May 1977. It reached number one on the New Musical Express chart in the UK and number two on the Billboard chart in the US shortly after its release.
Capitol Records recorded performances during the band's 1964 American tour on the 23rd of August 1964 and their 1965 American tour on the 29th of August 1965 and the 30th of August 1965. The official album sleeve states that all recordings were made on the 23rd of August 1964 and the 30th of August 1965, though some tracks like Ticket to Ride were actually recorded on the 29th of August 1965.
Giles Martin produced the remixed and remastered version of the album which was released on the 9th of September 2016. He worked with technical engineer James Clarke using demix technology to improve the sound quality from the original three-track tapes found in Capitol Studios archives.
George Martin used air from a vacuum cleaner to keep the tape deck cool because the working three-track machine overheated during operation and melted the magnetic tape. Recording engineer Geoff Emerick helped implement this solution while transferring the recordings to 16-track tape for filtering and mixing.
The album was not officially released on compact disc until the 9th of September 2016 when it was re-released worldwide as Live at the Hollywood Bowl. Prior to that date, the original 1977 album had been issued simultaneously on 8-track tape and cassette but never received an official CD release.