I agree - there is a great book by Paul Nahin. I bought it since I wanted to understand how someone got the idea of using complex numbers in electrical engineering. But I have found the book to be very hard to skim. I really have to work along with it to understand the technicalities.
Agreed as well. Nahin is comprehensive and authoritative, but a good biography of Heaviside for people who aren't already physicists or engineers has yet to be written (or at least yet to be discovered by me.)
