A couple of days ago, Walter posted about HIAS and Helga and Elly's arrival in New York. He mentioned a scrap of paper with a birth date and birth place, and he surmised these would have been taken from Elly's false Polish passport.
We have that passport among our artifacts, and Walter is precisely correct about Katowice and the July 3, 1900 date--the place is fictitious but the date is accurate. Actually, there is a discrepancy regarding Elly's birth year in the two official death records that are accessible through Ancestry.com. The Social Security Death Record has her date of birth as July 3, 1900, but the State of California death record has it as July 3, 1901. We agree that 1900 is correct, right?
Here's an image from the passpost, followed by a closeup of the passport photos.