Letter, R. P. Rothwell to Alexander H. Tiers - Concerning the Possibility that the Great Louisiana Sulphur Deposit (i.e. the Calcasieu deposit) Contains Water (He concludes that it does not and recommends that a new attempt at mining it be made.), 1889

Letter, R. P. Rothwell to Alexander H. Tiers - Concerning the Possibility that the Great Louisiana Sulphur Deposit (i.e. the Calcasieu deposit) Contains Water (He concludes that it does not and recommends that a new attempt at mining it be made.), 1889, Box: 2, Folder: 7. Tiers-Frasch Collection, 00-31. Science History Institute Archives. https://sciencehistory.libraryhost.com/repositories/3/archival_objects/43325 Accessed November 24, 2024.