At the time this postcard was printed, the U.S. National Bank Building (below on the right) had not yet been built. It was completed in 1917,with major additions in 1925. A.E. Doyle, the building's architect, was a devoted classicist who also designed Portland's Central Public Library, the Meier & Frank Building, the Lipman Building, the original Reed College buildings, and the Benson Hotel.
Here's the modern view:
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And here's the back of the card, with a message to Viola in Grant's Pass, Oregon that reads:
Thanks for the seeds. I shall look patiently for the pretty flowers. I do think Asters are such choice flowers. Haven't heard from your mother since she left guess she is having the time of her life. I guess Vada is pretty well considering. _______will have another job with time. Celia