Talk:Oro Grande, California

Laborer S.E.R.A.
I see in a census record from 1930 that my grandfather and many others were a laborer for S.E.R.A. in Oro Grande. Anyone have an idea of what is S.E.R.A.? 184.101.88.251 (talk) 00:50, 10 September 2022 (UTC)