Barn Blueprint

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“Ventilating a barn having a silo at or near the center. The fresh air enters at AB, and finds its way to the foul-air shaft CE, passing out through the cupola F. The ventilators, CE, are spaces in the walls around the silo."—The Federal Digest, 1921


The Federal Digest Farm Economy (Minneapolis, MN: Better Farming Association, 1921)


TIFF (full resolution)

2109×2400, 411.8 KiB

Large GIF

899×1024, 69.2 KiB

Medium GIF

562×640, 36.8 KiB

Small GIF

281×320, 14.1 KiB