Charles W. Metz
THE LINKAGE OF EIGHT SEX-LINKED CHARACTERS IN DROSOPHILA VIRILIS
Genetics 1918 3: 107–134
[PDF]  

Alexander Weinstein
COINCIDENCE OF CROSSING OVER IN DROSOPHILA MELANOGASTER (AMPELOPHILA)
Genetics 1918 3: 135–172
[PDF]  

F. M. Root
INHERITANCE IN THE ASEXUAL REPRODUCTION OF CENTROPYXIS ACULEATA
Genetics 1918 3: 173–206
[PDF]