Freeman Bibliographical Database
| Identifier: | F1550 |
| Date: | 1972 |
| Concise reference: | Darwin, Francis & Seward, A. C. eds. 1972. More letters of Charles Darwin. 2 vols. New York: Johnson Reprint. |
| Detailed reference: | 1550. 1972 New York, Johnson Reprint. 2 vols. Facsimile of F1548. Sources of Science no. 137. |