So here is my current opinion after looking at: http://retroreveal.org/images/ss/64660April 5 99CancelledSolou
-- PuzuyUSPour BOLD
= , I am certain.Underlined
= I believe but am open a substantiated difference, not a "guess" or will it stick to the wall.
- = Unknown letter here.
Now the first name:
"Solo" is certain, then "u" is likely. But the last two letters seem to have to be p,b,d.
Old style lower case cursive 'p' has a high vertical line as shown in the word "April." Note that he well dots his "i"
in April as well. No other dotting of letters.
His lower case "L" are all quite looped so that disallows the "l" as the last two letter. There is no cross bar for a "t" either. Likewise I would expect a good loop for an "h"
Just a comment, remember the lower case "z" in cursive is a weird beast and the weird beast was clearly there.
I had hoped to do better, but this is my best. Sorry that it is incomplete.