This is an astonishing and welcome find.
It's the first evidence of golf played in the Chicago area by someone other than Charles Blair Macdonald, Herbert J. Tweedie or a fellow named Robert Chandler, who swatted it around in Jackson Park and Washington Park in 1887-88.
Auld Reekie is a nickname for Edinburgh, so we can assume that at least some of those involved came from there.
The seeds for the first permanent course in Lincoln Park were sewn by golfers in 1914, and the next year, the Lincoln Park Golf Course – a.k.a. Diversey – was built, 9 holes by Tom Bendelow (of course). Lincoln Park North, a.k.a. Waveland, now Marovitz, opened in 1932. There's still a range at Diversey, but the course is long gone.
Karl, kudos on the find.