1. Alan and Eleanor Gregg in Big Sur, California

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2. Alan Gregg and others at the UCLA School of Medicine

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3. Alan Gregg with George W. Merck and New Jersey Governor A. E. Driscoll in Rahway, New Jersey

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4. Alan and Eleanor Gregg at Bangalore with Robert Watson and his wife

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5. Alan Gregg in Japan on his way home from China (image 1)

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6. Alan Gregg in Japan on his way home from China (image 2)

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7. Medical Economics photo for Rockefeller Foundation's 1942 Annual Report

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8. G. W. Bakeman and Alan Gregg at the Paris Rockefeller Office

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9. Alan Gregg

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10. Alan Gregg

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11. Alan Gregg in Chatou-Croissy, France

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12. Eleanor Gregg in Chatou-Croissy, France

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13. Santiago Samper laboratory

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14. Alan Gregg with a Japanese delegation

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15. Alan Gregg in Magdalene River, Colombia

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16. Histological laboratory and students in Colombia

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17. Alan Gregg with a group in Brazil

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18. Alan Gregg in Brazil

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19. Alan Gregg in service uniform during World War I

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20. Alan Gregg as Intern at Massachusetts General Hospital

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21. Alan Gregg in uniform

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22. Alan Gregg with microscope at Massachusetts General Hospital

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23. Alan Gregg at 16

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24. Alan Gregg with his mother

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