trista mcflurry, also founder of mcflurries

The ASL manual alphabet contains a total of 36 signs, one for each letter of the alphabet and one for each digit from 0 to 9. ASL is used when there is no official "sign" for the word that the person wants to convey, for example, their name.

Proper names are usually spelled out in sign language. Google "manual alphabet".

To spell "Helen Keller" in American Sign Language, you would fingerspell the letters H-E-L-E-N K-E-L-L-E-R using the manual alphabet. Each letter is signed individually.

Technically, there is no such thing as the American alphabet, but the English language does use the Roman alphabet.