Identifying base version-no of all files in a branch

mthread <[email protected]> Wed, 1 Aug 2012 22:25:30 -0700 (PDT)
Newsgroups gmane.comp.version-control.cvs.general
Organization http://groups.google.com
Message-ID <[email protected]>
Hi,
   Is there a CVS command that will provide me with version no(base version) of all the files in a branch.
   What I mean by 'base version' here is...the version no of all the files in a branch..when the branch was first created.
   I want to create a plugin in Eclipse...through which I can retrieved the base version no of all the files in a branch.
   Thanks every one in advance