The "rule" for letter-for-letter spelling is that the spelling should look exactly like the word/words when they are written normally -- same punctuation, same capitalization.
...Robert Hendricks, R-o-b-e-r-t H-e-n-d-r-i-c-k-s
...John van Leeuwen, J-o-h-n v-a-n L-e-e-u-w-e-n
...JoAnne Martin, J-o-A-n-n M-a-r-t-i-n
Happy punctuating!
Margie