Maps
| Place Name | Natal ; Port Elizabeth ; Kimberly |
| Title | Comparison of gradients along the base lines |
| Date | 1894 |
| Scale | 1 in. to 600 ft. (Hor) and 4 in. to 5 ft. (Vert) |
| Dimensions | 48.7 x 27.7 cm |
| Place of Publication | Cape Town |
| Publisher | W. A. Richards |
| Date Published | 1894 |
| Series | G |
| series No | 42 |
| Year | 1894 |
| Source | Annexures to the Votes and proceedings of the House of Assembly/Legislative Council |
| Source Volume | IV |
| Source Date | 1894 |