Rosse, L. P., & Brayley, E. W. (1868). Letter from Lawrence Parsons, Earl of Rosse, to [Edward William Brayley?] granting him permission to use a drawing of the "Nebula of Orion to illustrate your lectures" and referring the correspondent to Professor Stokes.

Rosse, Lawrence Parsons, and E. W. Brayley. Letter from Lawrence Parsons, Earl of Rosse, to [Edward William Brayley?] Granting Him Permission to Use a Drawing of the "Nebula of Orion to Illustrate Your Lectures" and Referring the Correspondent to Professor Stokes. 1868.