In Recent Contributions to The Mathematical Theory of Communication (Weaver 1949), aka The Mathematics of Communication (Weaver 1949) (various copies exist online), and also published as Part I of The Mathematical Theory of Communication (Shannon and Weaver 1949), Weaver says:
We are now in a position to state the fundamental theorem, produced in this theory, for a noiseless channel transmitting discrete symbols. This theorem relates to a communication channel which has a capacity of C bits per second, accepting signals from a source of entropy (or information) of H bits per second. The theorem states that by devising proper coding procedures for the transmitter it is possible to transmit symbols over the channel at an average rate* which is nearly C/H, but which, no matter how clever the coding, can never be made to exceed C/H.
* We remember that the capacity C involves the idea of information transmitted per second, and is thus measured in bits per second. The entropy H here measures information per symbol, so that the ratio of C to H measures symbols per second.
I have not managed to find published errata for this text.
Am I correct to think the phrase "H bits per second" ought to read "H bits per symbol"? If not, why not?