Alexander Wetmore was an ornithologist and the sixth Secretary of the Smithsonian. During 1911-1912 he collected in Puerto Rico, while working for the USDA’s Bureau of Biological Survey. He recorded his work in four volumes in which he described his daily activities, collecting methods, and observations of flora and fauna, as well as observations about the effect of tobacco and coffee plantations on the environment. In the fourth volume covering July 18 – September 15, he also discusses some of his less than stellar evenings on the island.
July 19, Friday -- Last night was certainly a bad one. First time in my life that bed bugs even kept me awake to amount to anything but I expect that all together I slept less than two hours. Got up twice turned on a light and first time killed 41 and next time 18. The pillows here are filled with a sort of seed something like cattail and then the mice or rats I did not know which tore a hole in mine and would not let it alone so finally I threw it in a corner on the floor.