For years I have had a Ten with an unidentified, hand operated blade. It looks period and didn't appear to be homemade. My father-in-law and I were cleaning in his shop and found an old book titled "The Dotted Line" (it looked like a cat manual and was issued june 1930. On the cover, it says "Issued by the Caterpillar Tractor Co. and intended solely for the help of those engaged in selling the products of the Caterpillar Tractor Co.- No. 38- Showing some of the many machines and implements (excepting agriculture) produced by other manufacturers for use with various sizes of "Caterpillar" track type tractors".
At some point, the book had gotten damp and many of the pages were stuck together. After many hours, I separated all of the pages and looked up "snow plows" in the index of equipment. Turns out mine is "The Wausau Hand-Operated Reversible Blade, Combination Backfiller and Snow Plow" How exciting! It was manufactured by the Hi-Way Service Corporation Milwaukee, Wisconsin.
There is 241 pages of this sort of info with a photo and sales pitch description/specs. I hope to post some pics, when my wife helps me with the computer end of it! The book only seems to refer to the ten, fifteen, twenty, thirty, and sixty. Has any one else seen this book?