if you have a petition letter, you just say what documents you have with this package. if you you don't have a petition letter, also you should briefly describe why, and how you can apply for eb1b.
address of yours
address of uscis
re: I-140, EB1B
Employer: xxxxx
beneficiency:aaaa
Dearxxxx:
.............
appreicate your consideration in advance.if you have any concerns, or questions, please let me know.
sincerely
xxxx
(signature)
address of yours
address of uscis
re: I-140, EB1B
Employer: xxxxx
beneficiency:aaaa
Dearxxxx:
.............
appreicate your consideration in advance.if you have any concerns, or questions, please let me know.
sincerely
xxxx
(signature)