When Leonard White retired in 1948 , his son Bill picked up the job for 37 years .
Then David Ridley held the post for more than 20 years until Craig White took over the reins in 2007 .
When Leonard White retired in 1948 , his son Bill picked up the job for 37 years and then David Ridley held the post for more than 20 years until Craig White took over the reins in 2007 .