“My dear Gorgas,Instead of being simply satisfied to make friends and draw your pay, it is worth doing your duty, to the best of your ability, for duty’s sake; and in doing this, while the indolent sleep, you may accomplish something that will be of real value to humanity. Your good friend, ReedDr. Walter Reed encouraging Dr. William Gorgas who went on to make history eradicating Yellow Fever in Havana, 1902 and Panama, 1906, liberating the entire North American continent from centuries of Yellow Fever epidemics.”