1. The Nesting Habits of the Hen.;George;Iowa Agricultural Experiment Station Bulletin 178. May,1918
2. On the rythm of egg production.;Goodale;Jour. Amer. Assn. Inst. & Inv. in Poultry Husbandry. 1:18.,1915
3. Cycles and Rythm of Egg Production.;Patterson;Jour. Amer. Assn. Instr. & Invest, in Poultry Husbandry. 3:16:20.,1916
4. Certain Characteristics of Hen Eggs.;Horace;W. Va. Experiment Station Bulletin 166.,1917
5. The Weight of Eggs in connection with the time of day when they are laid.;Horace;Poultry Science, Vol. VI, No. 3 pp. 108-109.,1927