Which of Bruce Springsteen's bands was the first to feature Steve Van Zandt ?

Who did Van Zandt replace in that band ?

Van Zandt replaced Vini Roslin on bass for the band "Steel Mill" (which was originally known as "Child").

I am not 100% certain of this answer. Here is its source.

Great Springsteen series!

Thanks ! And, you are right on both counts. (All my sources are Springsteen bios... and you are spot on).

Thanks for the answer !