I suppose the earliest discovery I made was in 1942 at the age of 13. Because I happened to be living in the middle of Mobile, near the dock area, I found the first colonies ever recorded of the imported fire ant, which has now spread all over the United States. The State of Alabama asked me to do the first survey. The ant was spreading out then from Mobile, and so my first papers were on the imported fire ant. I was able to — on the basis of the observation I had made at 13, in 1942, and then the ones that I was making in 1949 — piece together the arrival time and the rate of spread in the earliest expansion of what is now one of the leading insect pests in the country. So that was a rewarding experience.