Frost party on the San Juan. Second trip of 1947. Left to right: Sam Stone; Frank E. Frost (boatman); Claude Lortz is sitting on boat; Robert L. Gates (boatman). Just below Government Rapid after running it

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  Frost Expeditions, second (John A. Frost; Frank E. Frost; Robert L. Gates; Claude Lortz; Samuel Stone)

  Manuscripts

  Professional and personal papers of Otis R. Marston and his collection of the materials on the history of Colorado River and Green River regions.

  mssMarston papers

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  On the Colorado near Mile 23. Leaning over is Sam Stone, then Frank E. Frost, Robert L. Gates and San Juan Jack. Second trip of Frost Expeditions on the San Juan River

  Manuscripts

  mssMarston papers V180/0103

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  Jack Frost. Government Rapid. First Frost San Juan trip. Running the rapid for pix. The same rocks and brush appear in the Brandenburg photo of 1945, June 15

  Manuscripts

  mssMarston papers V125/0086

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  Punts and crew of the second San Juan trip of the Frost Expeditions in 1947

  Manuscripts

  mssMarston papers V184/0064

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  Paul B. English; Skipper Frost; Kenneth Willison. San Juan trip with Frost Expeditions. Early in July

  Manuscripts

  mssMarston papers V125/0147

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  Frost party in the Goosenecks of the San Juan.Left to right: Walter Pelzner; Glennon Robinson (boatman); Robert A. Uihlein (sitting in stern, VP of Schlitz Brewing Co.); Owen Gromme (Curator of Milwaukee Public Museum)

  Manuscripts

  mssMarston papers V125/0046