30+ Rare Photos Of Extraordinary Events In History – Check Out #8! #36 Columns Of Hoover Dam Being Filled With Concrete, February 1934 (Looking Upstream From The Nevada Rim) Credit: rarehistoricalphotos Prev Next Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
