Thanks to University of Aberdeen for permission to share the image.
Photo © University of Aberdeen / Special Collections Centre
The photo is entitled "Golf House, Lundin Links" (ref: GB 0231 MS 3792/C2323) and it is from a glass plate negative registered on 11 August 1899 by James Ewing. The detailed catalogue description notes that there are "players and caddies" congregated in the club house doorway but under close inspection this looks to me like a group of children, four boys on each side of the entrance (see detail image below). They may well have acted as caddies I suppose.