The articles show some of the thought that went into designing bunkers at the turn of the century.
Some of the logic reveals issues that the early courses suffered from in the placement and strategic use of the bunkers. Very interesting reading!
1901 Bunker Architecture by Joseph Ryan
1903 Concerning Bunkers by Garden Smith
1907 Crossbunker by Van Tussel Sutphen
1909 Bunkers by Harold Hilton
1913 Bumps and Hollows by Bernard Darwin
http://homepage.mac.com/tullfescue/PhotoAlbum11.htmlTully