Die NGR Klas K 0-6-0ST stoomlokomotiewe, 'n saaltenklokomtief, is in 1880 deur die Natalse Regeringspoorweë bestel. (en) Holland, D.F. (1972). Steam Locomotives of the South African Railways, Volume 2: 1910–1955 (1st ed.). Newton Abbott, Devon: David & Charles. p. 126-127. ISBN 978-0-7153-5427-8. (en) The Railway Report for year ending 31 Dec. 1880, Natal Government Railways, p. JJ72. (en) The Railway Report for year ending 31 Dec. 1904, Natal Government Railways, Annexure B, Durban, January 1905. (en) The Railway Report for year ending 31 Dec. 1908, Natal Government Railways, p. 39, par 14.