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Steel and wood tanks and towers (1912)
W.E. Caldwell Co. · W.E. Caldwell Co. · leaf 20
TECKTONIUS FLAT HOOP FRICTION LUG.4 inch LuffM and larger have 2 Bolts. … CALDWELL RIVETED LUG. All slases have 2 Bolts.Steel and wood towers · Steel towers · Wood towers
Internet Archive · Building Technology Heritage Library · Public Domain Mark 1.0. Free to use for anything.
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