_RICHARD KNISELY & SON, 184 South Jefferson St., Chicago, Ills._
_W. W. MONTAGUE & CO., San Francisco, Cal., Pacific Coast._
_J. J. WALTERS, Denver, Col._
_PHILLIPS & BUTTORFF MFG. Co., Nashville, Tenn._
_CANADA GALVANIZING AND STEEL ROOFING CO., Montreal, Canada._
_MACHWIRTH BROS., Buffalo, N.Y._
_JEROME TWICHELL & CO., Kansas City, Mo._
_F. H. LAWSON & CO., Cincinnati, Ohio._
The National Sheet Metal Roofing Company, 510, 512, 514, 516, 518, 520
EAST 20TH ST., NEW YORK, U. S. A.
[Illustration]
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[Illustration: _Design_ C.—_Front and Side Elevation._