I have done some research on the internet and have links to photos of these seats in Harvey Houses; one photo is from the Fray Marcos Hotel Harvey House in Williams, AZ:
http://harvey.library.arizona.edu/finding_aid/1az/11/1-11-29.html
the second is from a Harvey Girls website but the photo does not give a location:
http://www.sdmodelrailroadm.com/harvey_history.html
I have attached a photo of one of the chairs, there are a total of four. The pedestals appear to be iron and my uncle had spray painted them black. The seats themselves may be bronze, I will leave that to you viewers. I love the little pins on the pedestals, which I assume were for your hat.
Would appreciate any opinions on these. I have enjoyed what I have learned about Fred Harvey, his restaurants and the Harvey Girls...I even caught the movie musical "Harvey Girls" starring Judy Garland on TV!
Thanks!!