The letterhead of J. H. Johnson, dealer in General Merchandise, Groceries, Boots, Shoes, Etc., in Hitterdal, Minnesota notes "country produce taken in exchange for goods. " The order is dated January 5, 1916 and is for Mark's Headache Tablets, Kill Pain, Mark's Lung Balsam, Toothache Drops, Epsom Salts, Peppermint and Petroline from the P. M. Mark Medicine Company of Fosston, Minnesota.
This letter, typed on Mark's Drug Store letterhead and dated March 17, 1916, is to R. Reierson of Holt, Minnesota from the P. M. Mark Medicine Company of Fosston, Minnesota. The letter discusses an order for Louse Killer and Carbolic Acid and suggests a substitution of Cresol Compound since they were out of Carbolic Acid.
This handwritten order on the letterhead of Amundson and Lee, dealers in General Merchandise and Hardware, of Newfolden, Minnesota is dated June 13, 1916. It requests the shipment of a dozen Goodie's Barbwire Liniment by express from the P. M. Mark Medicine Company.
Arne Knutson, General Merchant, Pine Creek, Minnesota wrote this letter on October 29, 1917 to Mark's Drug Store noting that he had not received half of his order of herb tea.
This handwritten order from H. B. Rouland of Turner, Montana, dated August 19, 1932 requests the shipment of a large box of Mark's Itch Salve from Mark's Drug Store in Fosston, Minnesota.
K. Hodne, of Hodne Hardware Company in Karlstad, Minnesota, wrote a letter dated November 22, 1932 regarding an unfilled order for Mark's Carbolic Salve.
The mining companies would conduct diamond drill core drilling to determine the geology of the rock beneath them. This letter describes the rock found as the mining company was looking at the possible development of the No. 8 Shaft, 29th level (Montana). The letter was sent to I.L. Reid, Supervisor of the Minnesota Explorations, Oliver Iron Mining Division located in Duluth, Minnesota.
This letter, sent to Dan Hestetune (a mining engineer at Soudan Mine), describes areas of interest between the No. 8 Shaft, 23rd and 25th levels. It explains where ore laid between the various levels and answers the question about whether the mine should continue east for more ore.