Geologist Presents: The O'Brien System - 23rd July 2019
Geologist Presents: The O'Brien System - 19th September 2017
Geologist Presents: The O'Brien System Halloween Special - 17th October 2017
Geologist Presents: The O'Brien System - 17th September 2019
Geologist Presents: The O'Brien System - 12th November 2019
Geologist Presents: The O'Brien System - 30th April 2019
Geologist Presents: The O'Brien System - 10th December 2019
Geologist Presents: The O'Brien System - 17th August 2023
Geologist Presents: The O'Brien System - 17th August 2023
Geologist presents: The O'Brien System - 13th September 2022
Geologist Presents: The O'Brien System w Jeffrey Alexander - 14th September 2023