Then I doubt you will be able to get the I-94 on this page, but you can try:
Regardless, you have two options and I have been personally successful doing either option for clients of mine:
1) You leave the sections asking for an I-94 blank and you make photo copies of your entry stamps in your passports to prove that you entered legally and inspected by an immigration officer because this is what counts. This is the fastest method and cheapest method and again, it should work because I have done it before. As I said, the main concern is legal entry and inspection by an immigration officer.
2) Now that you mention that your husband has nothing, he may have to do the second option. That is to file an I-102 and pay $330 and probably it will take 3 to 5 months or so, but he should be able to get a copy of his I-94 when the I-102 is processed. Here is a link:
You can do this option as well, but it will cost you $330 as well and it will mean having to wait a few months. After he gets the I-94, he can file the I-130 and I-485 and other paperwork to get Residency status.
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