512 books • 507 series
L (Alphabet Series - Letter L, #12)
D (Alphabet Series - Letter D, #4)
C (Alphabet Series Letter C, #3)
O (Alphabet Series - Letter O, #15)
N (Alphabet Series - Letter N, #14)
W (Alphabet Series - Letter W, #23)
U (Alphabet Series - Letter U, #21)
X (Alphabet Series - Letter X, #24)