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Place
- New York (State)--New York40
- Illinois--Chicago33
- Germany--Berlin26
- England--London20
- Germany14
- Germany--Karlsruhe12
- New York (State)11
- Switzerland--Zurich10
- Sweden--Stockholm9
- Germany--Heidelberg8
- Kungl. Lantbruksakademien (Sweden). Experimentalfältet8
- Germany--Leipzig5
- Peru5
- Germany--Munich4
- Massachusetts--Boston4
- Pennsylvania--Bridgeville4
- New Jersey3
- New Jersey--Atlantic City3
- Pennsylvania--Philadelphia3
- Scotland3