1. Letter from R. W. Hodgers, Jr to Adrian Kantrowitz

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2. Letter from W. H. Duehren to Adrian Kantrowitz

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3. Memorandum from Adrian Kantrowitz to Fred Grubel

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4. Memorandum from David Grob to Fred Grubel [on purchase of internal pacemakers for implantation in patients]

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5. Memorandum from Fred Grubel to I. Langer [on purchase of pacemaker for indigent patients]

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6. Memorandum from Fred Grubel to N. Herskovits [on pacemaker fund]

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7. Memorandum from Fred Grubel to N. Herskovits [on pacemaker fund]

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8. Memorandum from Kenneth P. Liroff to Adrian Kantrowitz [on pacemaker study]

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