Page 120. …about 3 miles west of Parker’s Prairie, Otter Tail county,
Page 121. by Henry Asseln, 100 M. in 1878, at $7 to $10; (The Geological and Natural History Survey of Minnesota, The Eighth Annual Report for the Year 1879, Submitted to the President of the University, Feb. 18, 1880, The Pioneer Press Company, St. Paul, MN, 1880)
Bricks. Henry Asseln made 100,000 bricks in 1878 on section 19, Parker’s Prairie, near Fish lake which lies only a few feet lower than where the clay was dug. Below the soil there is five feet of yellowish clay suitable for this manufacture, but farther down the clay is gravelly till of the ordinary type, extending beyond the bottom of a well twenty feet deep. Some sand was mixed with the clay for tempering. These bricks were of fair quality, sold for $7 to $10 per thousand. (A Report on the Geological and Natural History Survey of Minnesota, 1882-1885, Volume II, N. H. Winchell and Warren Upham, Pioneer Press Company, St. Paul, Minnesota, 1888, Page 558)