CONTAINED within a Sunday Money article dated November 21, 1993, and titled ''Salomon puts on a new 90s face'' was a statement that Salomon Brothers had been barred from acting as a primary market maker for US treasury bonds in 1992. This was incorrect. At no time, in 1991, or otherwise, has Salomon Brothers ever been barred from acting as a primary dealer of the US treasuries. We regret the error. Faxcast IN an article dated November 21, 1993, and titled ''Revolutionary receiver helps spread the word'', the mention that the Faxcast system could deliver signals to up to 80 sources was incorrect. In fact, there can be an infinite number of receivers of the same broadcast message.