Mike,
The American Golf Course Guide was an somewhat annual book edited at first by P.C. Pulver and first pubished in 1916. Any golf course in America could be listed in it and the information it contained was very basic. It was basically a big book of advertising and if the club decided not to pay for the privilege their information was removed. The source of the information is never explained but is assumed that it came directly from the club itself.
That's the good news. The bad news is that it is a completely unreliable source for information for any serious researcher to use and Mountain Lake is a CLASSIC example of why. Shown below is information from every listing for Mountain Lake from the years 1917-1931. Tom Macwood wrote, "According to the Golf Course Guide (1917 through 1930) the golf club was founded in 1917."
Tom, you are WRONG! You should have looked them up and you would have found the following information:
YEAR ESTABLISHED HOLES LENGTH
1917 1917 9/w9 under construction 3,168
1920 1915 9/w9 under construction 3,168
1921 1917 18 6,580
1922 1915 18 6,166
1923 1917 18 6,166
1925 1917 18 6,166
1926 1917 18 6,166
1927 1917 18 6,166
1928 1917 18 6,166
1929 1917 18 6,166
1930-31 NO LONGER LISTED!
Depending on WHICH YEAR you read, it was established in EITHER 1915 OR 1917, had 9 holes or 18, and went from 3,168 to 6,580 to 6,166 yards in just over two years! One also might draw the conclusion that the club no longer existed from 1930 onward since it was not listed in the 1930-31 issue!
Actually, the information presented SUPPORTS exactly what the Mountain Lake website says, that in 1916 the course was DESIGNED by Seth Raynor. It DOESN'T say that it was open for play. The 1917 book indicates that the course was open for play in 1917 but was not completed. the 1920 book gives the same information, but I believe is suspect and is an example of the problem of relying too heavily on these annuals for detailed information. I would expect that the club finished the second 9 holes before then and that the information from the previous listing under "Holes" was carried forward without correction.