This week we are featuring a couple of pages from our Field Book collection. These pages are from the summer of 1937 and report the shocking temperature of 120° in the city of Corpus Christi, Texas. The temperature for each day can be seen at the upper right corner of the page. Keeping track of the weather and temperature during a survey was very important because the length of the steel tape used for measurements could vary with temperature changes. The page dated June 11, 1937, even has two temperatures recorded for different times of the day.