About the design of C++? About the history of C++?
Look at my papers for HOPL-2 and HOPL-3; HOPL stands for “History Of Programming Languages”, the premier conference on that subject, sponsored by the ACM. These are heavily peer-reviewed papers. For even more information see my book The Design and Evolution of C++ and the Preface to the 2006 Japanese translation of D&E which brings the information up to 2006. Also, many of my interviews touch upon the issues of background, design, and history of C++.