
Voted 10/10 | Yes, possessive. No, apostrophe. The USGS standard/policy is to not include apostrophes for possessive names to avoid confusion and ambiguity (especially on their maps where an apostrophe mark might be mistaken for or hide another map feature). In this case, even though the name is unofficial and does not appear on the map, if it ever did in the future it would appear as Macks Peak. One might as well apply the USGS convention now. There have been very few exceptions granted over the years (maybe half-a-dozen). |