I am looking for Marjorie Lynn Mosby born abt 1931.
Living in San Jose in 1948.

Looking at the Nevada Marriage Index on Ancestry there is a marriage for a Marjorie L. Mosby and Robert D. Holze on December 27, 1974. Don't know if this is your person but maybe a place to begin.

Perrin

Yes, we found the marriage in Nevada. We are searching for a birth mother. She delivered a boy in 1948 under a sealed adoption and the name is the only information the adoptive parents had about the birth mother.

We are going to search adoption sites next but hoped to find something on ancestry.com