For each US State, try to head-copy it. First, the state is sent in Morse code. Then it is spoken. And finally, it is sent again in Morse code. If you missed it the first time it, the second time allows you an opportunity to learn the state.

Ideally, you will hear the state in your inner voice as it is spoken as opposed to the two-letter abbreviation. Mental translations take time, and it will save you mental effort later on.

73 de AD0WE!