Repair Parts list for the "Challenge 27" windmill, with a photo of the parts. Covers 6, 8, 10, 12, 14, 16, and 18 foot mills.

Repair Parts list for the "Dandy" windmill, with a photo of the parts. Covers 6, 8, and 10 foot mills.

Repair Parts list for the "Dandy Irrigator" windmill, with a photo of the parts. Covers 6, 8, 10, and 12 foot mills.

Repair Parts list for the "Challenge Internal Geared" windmill, with a photo of the parts. Covers 6, 8, 10, and 12 foot mills.

Repair Parts list for the Challenge 1 1/2 horse power engine, with a photo of the parts. No. 26000 up.

Repair Parts list for the 1 1/2, 2, 3, 5, and 8 horse power Challenge Engines.

Scans of 2 different color brochures covering the "Challenge 27" windmills.

Several pages describing the merits of the Challenge 27 windmill with good pictures.

Capacity chart of Challenge mills. Several pages describing the merits of the Challenge gasoline (Hit 'N Miss) engines with good pictures.

56 pages.