1. Redeposited pollen in Late Wisconsin pollen spectra from east-central Minnesota;Cushing;Am. J. Sci.,1964
2. Late Wisconsin pollen stratigraphy and the glacial sequence in Minnesota;Cushing,1967
3. Investigation into the differential corrosion susceptibility of pollen and spores;Having;Pollen Spores,1964
4. Contemporary pollen spectra in central Canada, 2. The forest-grassland transition in Manitoba;Lichti-Federovich;Pollen Squares,1965
5. A preliminary study of differential pollen grain preservation;Sangster;Can. J. Botany,1961