Not sure what you mean by historical time zones. If you are referring to DST rules, boost.Date_Time released in Boost 1.34, which was released almost 10 years ago has a member function dst_local_start_time(year) for a time_zone object which returns 'The date and time daylight savings time begins in given year'.

The doc links for older releases seem to be broken on boost.org, so I can't check if the functionality is even older.