Third Lanark was wound up in the Court of Session in 1967 and its membership of the Scottish League was terminated. The club has been reformed as an amateur team but has never returned to the League:
https://en.wikipedia.org/wiki/Third_Lanark_A.C.
Some of its fans switched their allegiance to Clyde. A club which is looking to return to Glasgow but is currently ground sharing with Hamilton Academicals.