First Day Covers
Location: Staffelstein, Germany
Location: Staffelstein, Germany
Riese was a German mathematician. He wrote arithmetic textbooks that taught people how to use a calculating board that was simialr to an abacus. His second book, Rechnung auff der linihen Federn actually was published in over 100 editions, a remarkable accomplishment in any time period.
Links to my other sites that connect Riese to
Stamps
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Date: 3/28/1959 Location: Staffelstein, Germany |
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Date: 3/28/1959 Location: Staffelstein, Germany |