This is a great overview of the brewing history in Oregon(thanks to TravelPortland):
Beer Media Kit
The History of Beer in Portland
German brewer Henry Saxer settles in Portland and opens Liberty Brewery.
Henry Weinhard, a young German immigrant, moves to Portland. With a partner – the aptly named George Bottler – he establishes Portland's second brewery, City Brewery.
Saxer sells Liberty Brewery to Henry Weinhard.
Weinhard buys Bottler's interest in City Brewery in what is now Portland's Pearl District. (The modern Blitz-Weinhard Brewing Company, Inc., operated at this site until 1999.) Henry Weinhard's lager becomes famous throughout the Northwest and is shipped as far away as China and Siberia.
The complete history up to 2007 is here.