Think about the provenance of every item you have. A relative pointed out to me that I have quite a few pictures from my Ufkes family. They came from my maternal grandparents.
Then it dawned on me. The family home burned in 1924 and most of the pictures are from before that year. Did the family get the pictures out? Did other relatives share pictures with them or give them pictures? I'll never know, but just thinking about who else might have had the pictures in 1924 got me to thinking about various family members who might have had pictures.
And thinking about provenance is never a bad thing.