And when you are done looking at this site for the Scots input on football world-wide, here are two more.
For those who literally want to trace on the ground the local development of Scots and Scottish football in our own and other countries there is the newly available and ever-expanding site of:
The Scots Football Historians' Group
And on Scottish sports history in general but inevitably including fitba', see Andy Mitchell's inestimable:
Foundation and Philosophy,
From the moments in 1872 that football took hold in wider Scotland and not just in a park in Glasgow's southern suburbs it took just a year for an English team, now defunct, to be formed by Scots, four for Scots to be invited to rather than just play their game in England and three more for a Scot to found a still extant, English club. The team was Birmingham's Calthorpe. Reddie Lang and Peter Andrew were the players. The club is James Allan's Sunderland.
Moreover, all three would be examples of what would become an increasing trend. Other clubs begun by "North Britons" were the Nolli-brothers' Hartlepool St. Augustine in England's North East, Rusholme in Manchester, Southport in Lancashire, in London both Millwall and Arsenal and finally late-comer Bradford in Yorkshire. And then there were the Caledonian tactics and footballing philosophy that were adopted, most with an infusion of Scots players, a few without, by clubs from 1878 into the new century and from Darwen and Villa via the Merseyside and Manchester clubs, though the East Midlands and London, notably Tottenham and Chelsea, to the South Coast's Portsmouth.
Nor is this pattern of penetration confined to South Britain. In Northern Ireland its national team adopted Scots tactics from its first-ever match in 1882 and Scots themselves were playing not just for its clubs but from 1890 for the same, the first being Robert Morrison of Cliftonville and Greenock-born.