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Fairbanks, A.D. Feb. 20, 1879
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Fairchild, David G. Nov. 24, 1897
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Fairchild, David G. Mar. 19, 1898
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Fairchild, David G. [Jan 1898]
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Farlow, William G. May 19 [no year]
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Farlow, William G. Dec 3 [no year]
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Farlow, William G. Jul. 9, 1898
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Farlow, William G. Jul.12 [1898]
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Farlow, William G. Jul. 18 [1898]
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Farlow, William G. Aug. 15, 1899
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Farwell, Oliver A. Mar. 26, 1888
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Faxon, Charles E. [Mar 1896]
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Faxon, Charles E. Mar. 12 [1896] [postcard]
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Faxon, Charles E. Jul. 21, 1887
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Faxon, Charles E. Feb. 25, 1896
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Faxon, Charles E. Apr. 13, 1896
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Faxon, Charles E. Apr. 10, 1901
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Fernald, Merritt L. Jul. 21, 1896
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Fernald, Merritt L. Aug. 6, 1896
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Fernald, Merritt L. Oct. 16, 1896
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Fernald, Merritt L. Jan. 26, 1898
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Fernald, Merritt L. Mar. 28, 1898
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Fernald, Merritt L. Mar. 27, 1899
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Fernald, Merritt L. Sept. 21, 1900
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Fernald, Merritt L. Sept. 29, 1900
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Fernald, Merritt L. Apr. 10, 1901
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Fernald, Merritt L. May 17, 1905
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Ferriss, James H. Mar. 6, 1903
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Fewkes, J. Walter Sept 13 [no year]
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Fisher, Ellen S. Oct. 17, 1879
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Fletcher, Frederick W. Aug. 25, 1896
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Flett, John B. Jan. 17, 1901
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Flett, John B. Jan. 17, 1901 [list]
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Floyd, Frederick G. Jan. 18, 1900
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Floyd, Frederick G. Jan. 13, 1900
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Foote, Albert E. Nov. 9, 1877 [postcard]
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Foote, Albert E. Aug. 23 [1877] [postcard]
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Foote, Albert E. Aug. 21 [1877] [postcard]
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Fox, William J. Dec. 27, 1905
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Fox, William J. Feb. 7, 1906
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Francis, George E. Dec. 5, 1877
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Francis, George E. Dec. 10, 1877
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Francis, George E. Jan. 8, 1878
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Francis, George E. Jan. 8, 1878 [enclosed list]
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Friese, Michael Mar. 13, 1876
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Fuller, Julius R. May 12, 1883
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Fuller, Julius R. Jun. 23, 1883
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Fuller, Lucy D. Dec. 10, 1901
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Furbish, Kate Jun 4 [no year]
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Furbish, Kate [undated]
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Furbish, Kate Feb. 23, 1893
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Furbish, Kate Aug. 3, 1875
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Furbish, Kate Apr. 13, 1894
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Furbish, Kate Aug. 6, 1895
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Furbish, Kate Sept. 10, 1898
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Furbish, Kate Oct. 26, 1900
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Furbish, Kate Oct. 6, 1901
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Furbish, Kate Jun. 5, 1905
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Furbish, Kate 1905