RPPC Portrait of Sno Covered Hikers Possibly Donner Pass Castle Peak? Postcard For Sale

RPPC Portrait of Sno Covered Hikers Possibly Donner Pass Castle Peak? PostcardThere is a distinctive mountain in the reflection. I came up with to possibilies for the peak--the first is Black Elk Peak, SD, the other is Castle Peak on Donner Pass. I can't confirm either. The studio is National Photo Co in Minneapolis, but that did not provide any further clues.Unposted
Real Photo (1900-Now)
Brand/Publisher--National Moderate marking, edge and corner wear. Please take a moment to review the high resolution scans.

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