[1] Calling Card also marked the end of an era for Gallagher's band, as it was the last album to feature Rod de'Ath on (drums) and Lou Martin on (keyboards).

Following the Calling Card tour (1976-1977), Gallagher restructured his line up, retaining only his long-time bass guitarist Gerry McAvoy.

As producer Roger Glover commented “they all seemed very dedicated to Rory, there was an allegiance, born of years of smoky clubs and endless journeys”.

[6] In its August 2005 issue, Guitar Player's "Oeuvre Easy" feature on Gallagher praised its "brilliant songs" and "rockin' edge" and listed it in the "Inspired" section of his catalogue.

[7] Irish folk group The Dubliners later recorded "Barley And Grape Rag" with Gallagher for their 1992 release, 30 Years A-Greying.