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Brad Wilson, DVM: Saguaro N.P., AZ
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Brad Wilson, DVM: Saguaro abstract, Saguaro National Park, Arizona
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Brad Wilson, DVM: Saguaro Moonset, Saguaro National Park, Arizona
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Brad Wilson, DVM: Signal Hill petroglyphs, Saguaro N.P., AZ
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Brad Wilson, DVM: Petroglyph, Signal Hill, Saguaro National Park West, Tucson, Pima County, Arizona
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Brad Wilson, DVM: Petroglyph, South Mountain Park, Tucson, Pima County, Arizona
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Brad Wilson, DVM: Petroglyph detail B, South Mountain Park, Tucson, Pima County, Arizona
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Brad Wilson, DVM: Petroglyph detail A, South Mountain Park, Tucson, Pima County, Arizona