The Union of South Africa achieved external sovereignty at some point prior to the Balfour Declaration of 1926. Milestones along the way included independent membership in the League of Nations in 1919 and recognition in the Imperial Conference of 1923 that the South African government could not be committed to the acceptance of active obligations except with the definite assent of its own government. In more positive terms, the government was recognized as possessing the authority both to appoint representatives with full powers to negotiate treaties on its behalf and to ratify the results.
Internal independence remained circumscribed by the Colonial Laws Validity Act, which barred colonial legislatures from passing legislation repugnant to Acts of Parliament or other forms of legislation applicable to the colonies. However, equal status of the Dominions with Great Britain was granted by the Statute of Westminster, 1931, which repealed the Colonial Laws Validity Act.
A new era dawned for Souh Africa when it jettisoned apartheid and adopted a new interim constitution in 1993, leading to adoption of a final constitution in 1996.
Currently composed of volumes from the 1st reissue (1993-2003), 2nd edition (2003-2013), and 3rd edition (2012 -), The Law of South Africa (KTL13 1993), edited by Joubert and Faris, is a 34 volume encyclopedia providing a black letter introduction to all areas of South African law. It includes a Consolidated Index, Cumulative Table of Cases, and Cumulative Supplement, currently updated through 2013.
Butterworth's Survey of South African Law (KTL11 .B88) is an annual guide to federal and provincial legislation, case law, and articles, organized by topic. Published with several years' delay, the title currently runs through 2011.
Update: Researching South African Law, at the GlobaLex web site.
Researching South African Law, at the LLRX.com web site.
South Africa, at the Law Library of Congress Guide to Law Online web site.
Wille's Principles of South African Law, 9th ed., general editor Francois du Bois, 2007. The aim of this work remains to set out the basic principles of South African private law systematically, in clear unmistakable language, and as comprehensively as is possible in a single volume. The ninth edition retains the basic structure of the previous edition with innovation in the treatment of its subject matter and the dissemination of original research. All chapters have been has been rewritten , in most cases from scratch, in order to take account of major changes in the law in the 15 years since the previous edition, or to improve and modernize the treatment of a topic. The useful practice in previous editions of citing the older, original authority for a proposition alongside contemporary sources.
South African constitutional law : the Bill of Rights, 2nd ed.,2005, [edited by M.H. Cheadle, D.M. Davis, N.R.L. Haysom. One volume loose-leaf treatise.
Part Two of The South African Legal System and its Background, by H. Hahlo and Ellison Kahn (KTL120 .H43), 1968, comprises a history of the Roman-Dutch law and its antecedents.