What should I put for the spouses race for the record I'm indexing?

Samuel Jacob McMillan

Image Name: 106481824_00035

Batch ID: M391-6X8

Lisa Kay Horlacher

Are you talking about Image 1? I would do as the field helps instruct:

If the color or race is not found in the drop-down list, type what you see.

AndLinda

https://www.familysearch.org/help/helpcenter/article/where-do-i-find-the-field-instructions-while-indexing