Letter from D. Bailey Calvin to I. H. Kempner providing a list of state-supported medical schools in different U.S. cities from their main universities and notes that half of these are not on the same campus as the main university. He suggests that Dr. Leake will address alumni matters upon his return to Galveston and offers further assistance if needed.

From Introduction: "Figure 1 shows the location of sources that have been either exploited or seriously considered at one time or another, super-imposed upon a map indicating by small letters the order of consumption of K2O in the leading States; the amount used in these States, together with the percentage of the total consumption of potash used as fertilizer in the United States in 1939, is given in table 1. Figure 2 shows the domestic production and total consumption of potassium salts, in terms of tons of K2O, with the value per unit at the plants, for each year since 1913. Considered together, these two figures tell a significant story."