Medical BotanyWalter Hepworth Lewis, Memory P. F. Elvin-Lewis · First published 1977 · Latest edition 2003Open the Tome
Airborne and allergenic pollen of North AmericaWalter Hepworth Lewis · First published 1983Open the Tome
Chromosomes and phylogeny of Erythrina (Fabaceae)Walter Hepworth Lewis · First published 1974Open the Tome
Revision of Richardia (Rubiaceae)Walter Hepworth Lewis, Royce L. Oliver · First published 1974Open the Tome
A monograph of the genus Rosa in North America east of the Rocky MountainsWalter Hepworth Lewis · First published 1957Open the Tome
