Suburban build sheets?

[SidsChopShop]

There have been many people who have found their build sheets on their 67-72 but most if not all have been trucks so this struck my curiosity.

Here is my all original 2 owner ‘69. I have looked under the front seat and up the rear seat cover and under the vinyl floor the best of my ability. Besides some trim screws and some body washers I have had no luck finding it the sheet. So the question is have any of you been lucky enough to find your suburban build sheet? If you have post it up along with a good place to search! Happy hunting!