Mick
1903 was indeed the date of Steven's book, and yes, as with many books about the Anglo Boer War conflict you will come across many jingoistic views by many authors of the Victorian era. I suggest if you really want to glean knowledge on this fascinating subject is to keep a very open mind and after Stevens book, as David has suggested the Davitt, possibly followed by Pakenham's tome which are well worth a read for what many armchair and academic scholars on the subject call balanced. Although, as with many historical accounts of warfare and it's contributors, authors views and research can be embellished.
In this instance the reader has to decide on where authors loyalties lie and what was included and excluded to suit the narrative.
Rayne Kruger, Bill Nasson for a S.A perspective and Martin Bossenbroek for a Dutch angle on the war. Rayne Kruger's Goodbye Dolly Gray is one of my personal favourites, 1st published in 1959. Along with the US historian Byron Farwell's The Great Anglo Boer War. Not forgetting Arthur Conan Doyle's publication, The Great Boer War.
Leo Amerys and Fredrick Maurice along with Louis Creswickes volumned history of the conflict is also well worth a visit.
These volumes will give you an overview of the complete campaign. Albeit full of jingoism and imperialism they also contain some excellent information on the subject. And of course these were used by the above modern authors for some of their research regarding their publications.
I would also suggest you may like to delve into the controversial 2014 book by Chris Ash entitled Kruger, Kommandos & Kak. Uncomfortable reading for some and highly controversial, it provides a modern take on previous authors views of jingoistic imperialism and empire bashing. Although, I have to say Mr Ash does like to contribute his own jingoism and controversy into his books.
If you manage to trawl through the above publications and your interest hasn't wained.
I personally think you will have had a very good overview of the conflict from all its angles and I am sure after devouring all the information written in the above books you will certainly be able to form your own valued opinion on the history of the Anglo Boer War.
You only live once, but if you do it right, once is enough.
Best regards,
Dave