↑ http://digitalcommons.macalester.edu/cgi/viewcontent.cgi?article=1036&context=bildhaan [bare URL PDF] ↑ http://digitalcommons.macalester.edu/cgi/viewcontent.cgi?article=1071&context=bildhaan [bare URL PDF] ↑ http://digitalcommons.macalester.edu/cgi/viewcontent.cgi?article=1081&context=bildhaan [bare URL PDF]