John W. Gowen
STUDIES IN MILK SECRETION. VI. ON THE VARIATIONS AND CORRELATIONS OF BUTTER-FAT PERCENTAGE WITH AGE IN JERSEY CATTLE
Genetics 1920 5: 249–324
[PDF]  

L. C. Dunn
LINKAGE IN MICE AND RATS
Genetics 1920 5: 325–343
[PDF]  

L. C. Dunn
INDEPENDENT GENES IN MICE
Genetics 1920 5: 344–361
[PDF]  

John W. Gowen
STUDIES IN MILK SECRETION. V. ON THE VARIATIONS AND CORRELATIONS OF MILK SECRETION WITH AGE
Genetics 1920 5: 361
[Abstract] [PDF]  

James P. Kelly
A GENETICAL STUDY OF FLOWER FORM AND FLOWER COLOR IN PHLOX DRUMMONDII
Genetics 1920 5: 361
[Abstract] [PDF]