WashingtonPost.com has a searchable database of NCAA Tournament brackets from 1985 through 2015. CBSSports.com, meanwhile, has a table showing Final Four seeding dating back to 1979.
The database on WashingtonPost.com lists the seeding of every team in the tournament, what teams they played and in what round. For instance, a user could see that 13th-seeded Murray State defeated 4th-ranked Vanderbilt in the first round of the tournament in 2010.
The table on CBSSports.com lets the user see just how often No. 1 seeds make it to the Final Four as well as the times when lower seeds have found their way in.