Two things..... The owner of this site (David Biggins)was in SA this year I understand so he may ne able to help..... Also there is a book printed in 2000 called A TOURIST GUIDE TO THE ANGLO BOER WAR 1899-1902 compiled by TONY WESBY-NUNN, I.S.B.N. 0-620-24978-1, do not know if this is still available..... There are a number of maps in there that might be of use.....
Military Historical Society