ジェームズ・モートン・ショップ
Wilson, Ray Bentallと共著 An Annotated Synopsis of Paleozoic Fossil Spores and the Definition of Generic Groups, Illinois State Geological Survey, Report 91, Urbana 1944
Forms and facies of Vertebraria in relation to Gondwana coal, American Geophysical Union 1982
Variable coalification; the processes involved in coal formation, Economic Geology , Band 43, 1948, S. 207–225
A definition of coal, Economic Geology, Band 51, 1956, 521
Spores from the Herrin (no. 6) coal bed in Illinois, Urbana 1938
Contributions to Pennsylvanian paleobotany Mazocarpon oedipternum, sp. nov. and Sigillarian relationships, Illinois State Geological Survey, Report 75, Urbana 1941
Pteridosperm male fructifications; American species of Dolerotheca, with notes regarding certain allied forms, Illinois State Geological Survey, Report 142, Urbana 1949
L. R.