Catherine Fitch (Catherine Tweedale) and Zoe Cleland (Joanne Perly) played mother and (adopted) daughter in the Season 1 episode 'Child's Play'.
Yannic Bison mouths the last line Thomas Craig says about Sheffield Wednesday.
The title is a reference to a song by Joni Mitchell of the same name.
In this episode Crabtree "invents" building blocks, the earliest versions of attachable Lego bricks.
This episode takes place on 18th April 1903. Sheffield Wednesday won the League title in the 1902/03 season, beating West Bromwich Albion 3-1 in the final match of the season.