Maps
| Place Name | Port Elizabeth |
| Title | Diagram shewing principal triangulation from Umtata to the base line at port Elizabeth |
| Date | 1887 |
| Scale | 1 in to 16 miles |
| Dimensions | 38.2 x 30.5 cm |
| Place of Publication | Cape Town |
| Publisher | W. A. Richards |
| Date Published | 1887 |
| Series | G |
| series No | 21 |
| Year | 1887 |
| Source | Annexures to the Votes and proceedings of the House of Assembly/Legislative Council |
| Source Volume | II |
| Source Date | 1887 |