Leffingwell, R. C. (Russell Cornell), 1878–1960
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2442206A
- pdbooks.info ID: 111191
R. C. (Russell Cornell) Leffingwell Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| America's interest in Europe | 1922 | Author | |  | | |  | ||