Drawing of Sir Galahad from Good English: Oral and Written, Book Three (For Grades Six and Seven), p. 1
Please note that these sources are not listed in the online catalog.
- Good English: Oral and Written, Book Three (For Grades Six and Seven), by William H. Elson, George L. Marsh, and James F. Royster, 1921
- A Teachers' Manual for a Sixth Grade Course in State Citizenship, Mary C. Simms Oliphant, 1927