Complex sentence: Collier's first season in charge proved to be the club's last in the Midland League as York won election to the Football League in June 1929, taking the place of Ashington in Division Three North.
Split into simpler sentences: Collier's first season in charge proved to be the club's last in the Midland League because York won election to the Football League in June 1929. York took the place of Ashington in Division Three North.