GUEST: My parents, my mom and dad, were avid garage sale and estate sale people, collected a lot of things. And they came across this about 25 or 30 years ago and my dad, a retired building contractor, fascinated with the Bay Bridge, and San Francisco, which you know, everybody is, and before he passed away he gave it to me.

APPRAISER: There's a great mix of prints in this album. These are the commercial photographs in here with the printing on the negative. But then a man named Casper, he's also written in some little notations, too, so maybe they were making these as sort of commemoration of the finished bridge.

GUEST: Like this one. He says he's on top of the main tower. "Casper" and it has a little arrow drawn.

GUEST: So you know, that's me up there!

APPRAISER: And he's speaking in the third person, too, which I love.

GUEST: He refers to himself in the third person.

APPRAISER: And this page has my favorite photo on it.

GUEST: Right.

APPRAISER: This one right here which says, "On the catwalk. Casper, among the strands of the cable. A story to be told here." It's just so great, a nice personal story behind the building of this bridge.

GUEST: Right.

APPRAISER: The Bay Bridge was constructed between 1933 and 1936. So it's a fabulous time capsule for the building of this bridge and a nice human story behind it as well. It's not very often that you see albums like this about the construction of a bridge from this point of view. So I think that if you placed this at auction today, I don't see any reason why it wouldn't sell within an estimate of $400 to $600.

GUEST: Very nice.