Rough sketch of James Nasmyths' apparatus by which most perfect sound speculae may be cast with absolute certainty Astronomy 1879
Two bromide print of an original pencil drawing of the Orion Nebula by Sir John F.W. Hershel, as seen in the 20ft reflector at Feldhansen Cape of Good Hope Two bromide print of an original pencil drawing of the Orion Nebula by Sir John F.W. Hershel Astronomy 1920
