general_fact: 52 is the number of letters in the English alphabet, if majuscules are distinguished from minuscules.
math_fact: 52 is the 6th Bell number and a decagonal number.
trivia: 52 is the number of letters in the English alphabet, if majuscules are distinguished from minuscules.
historical_date: February 21st is the day in 1995 that Steve Fossett lands in Leader, Saskatchewan, Canada becoming the first person to make a solo flight across the Pacific Ocean in a balloon.