From the Guidebook:
The 135 Deodar Cedar trees
were planted in 1885 by the Woodbury Family, the founders
of Altadena. First organized by F.C. Nash in 1920, the
'Mile of Christmas Trees' has been strung with 10,000
lights each holiday season through the efforts of volunteers
and the Christmas Tree Lane Association. It is the oldest
large-scale Christmas lighting spectacle in Southern California.