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1.
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Source: info from Mary Piper
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2.
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Title: Death Certificate of Walter Piper
Author: Arizona State Board of Health
Publication: 25 Oct 1926
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3.
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Title: 1910 Gogebic County, Michigan federal census
Page: Bessemer twp., supv 12, enum 76, sheet 6b
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4.
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Title: Walter Piper's Obituary
Author: Ironwood Daily Globe
Publication: 10/27/1926
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5.
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Title: Arizona Silver Belt
Page: 25 Oct 1926
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6.
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Title: Ironwood Daily Globe
Page: 2 nov 1926
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