Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_39473 ( "Name" text, "Type" text, "Year Built" real, "Where Built" text, "Initial Owners" text )

### Question ###
Who were the initial owners of Wasco in 1858?

### Accurate SQL ###

SELECT "Initial Owners" FROM table_39473 WHERE "Year Built" = '1858' AND "Name" = 'wasco'