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  • All fields: 21.6 x 17.8 cm
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    • Making ice cream, 1910

    • Dairying; Iowa State University;
    • This photograph shows Martin Mortensen (2nd from left, standing behind the vat), professor of dairy for over 40 years at the Iowa State College (University) teaching a class of eight women and one male student how to make ice cream and ices in the...

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