This word ladder mandala takes advantage of two neat coincidences: that all four seasons have six-letter names, as noted by Lewis Carroll, and that each has exactly two letters in common with "season" -- and with each other, except Sp-W with three.
"Crossing the Seasons,"
Word Ways: Vol. 35
, Article 9.
Available at: http://digitalcommons.butler.edu/wordways/vol35/iss3/9