Brockhaus-1911: Iron Mountain · Iron-clad · Iron · Mountain Ash
Lueger-1904: Iron wood · Iron bricks
Meyers-1905: Iron Mountain · Iron, Ralph · Iron-stone · Iron-sand · Cast-iron · Iron · Irōn · Mountain Time · Mountain Ash
Pierer-1857: Great Iron Mountain · Iron · Iron Mountains · Clyde Iron Works · Iron Duke · Shade Mountain · Sharp Mountain · Saint Helen's Mountain · Savage Mountain · Stone Mountain · Table Mountain · Tuscarora Mountain · Tussey's Mountain · Wachusett-Mountain · Green Mountain · Green Mountain Boys · Bare Mountain · Broad Mountain · Broad Top Mountain · Monadnock Mountain · Saddleback Mountain · Mahoopeny Mountain · Kearsarge Mountain · King's Mountain