Statistics for occurrence #1 of “Captain Henry D. Wallen” in chapter 6 of Philip Henry Sheridan, Personal Memoirs of P. H. Sheridan, General, United States Army .:

...iver to the lower landing, and placed them in charge of a strong guard. Late in the evening the steamboat, which I had sent back to Vancourer, returned, bringing to my assistance from Vancouver, Captain Henry D. Wallen 's company of the Fourth Infantry, and a company of volunteers hastily organized at Portland, but as the Cascades had already been retaken, this reinforcement was too late to participate in the affair...
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