The Duncan Place 1901 image can't be 1901. Radio transmission did not exist outside of laboratories. The first US Military transmission was from Annapolis, MD in 1900. Marconi made his first successful transmission in 1901 from England to Canada. Radio didn't become commercialized until the 1920's. However, the military did have towers outside of bases in the 1910's. If this is 1901, it is literally a photo of one of the very first US military radio towers, but it is hard to understand why it would be placed in Mobile, AL.