EARLIER YOU ASKED FOR SUGGESTIONS.
I BELIEVE THAT IN MY INITIAL THREAD I SUGGESTED THAT MANAGERS ENJOY RESEARCHING FRANCHISE HISTORY BECAUSE OVER HALF OF THE MANAGERS ALREADY IN DO AND ARE EXPERIENCED.
THE SOURCES ONE CAN USE IS BASEBALLREFERENCE.COMWHICH IS BASICALLY THE BASEBALL ENCYCLOPEDIA. I USE THAT BUT I PURCHASED A BOOK TITLED " THE TEAM BY TEAM ENCYCLOPEDIA OF MAJOR LEAGUE BASEBALL " WHICH TO ME IS A SIMPLE WAY OF LOOKING AT FRANCHISE HISTORY. IT BASICALLY HAS THE SAME DATA AS BASEBALLREFERENCE.COM BUT THE SECTION OF IMPORTANT PLAYERS IS USEFUL AND HAS PICTURES OF THE PLAYERS.