List of Scottish Football League clubs

Aberdeen and St Johnstone
“The Scottish Football League (‘SFL’) was established in 1890, initially as an amateur league as professionalism had not been legalised in Scottish football. In 1893 a Second Division was formed, with the existing single division renamed the First Division. The Second Division was discontinued during the First World War but revived in 1921. A Third Division was added in 1923 but collapsed three years later as a number of its member clubs found themselves unable to complete their fixtures for financial reasons, with many folding altogether. After the Second World War the divisions were rebranded as Division A and Division B and a Division C was added. This included a mixture of new member clubs and the reserve teams of clubs from the higher divisions, but this division was dropped in 1955. …”
Wikipedia