Morse code has been in and out of the Boy Scout requirements for over a hundred years. During that time, Morse has changed from a career skill to a rewarding hobby, from a vocation to an avocation. Also during that time, radio has grown to include voice communications, data communications, and broadcast.
I’ve gathered all the requirements I could find: rank, merit badge, or skill award. Morse was a requirement for First Class for 61 years, 1911 to 1972. It returned as an option from 1979 to 1990 during the skill award period of BSA advancement.