Gilaki is a northwestern Iranian language spoken in Gīlān Province (استان گیلان) in the northwest of Iran by some three million people. There are three dialects of Gilaki: Western Gilaki, Eastern Gilaki and Galeshi, and it is closely related to Mazanderani.
Information about the Gilaki alphabet compiled by Wolfram Siegel.
Information about Gilaki
http://en.wikipedia.org/wiki/Gilaki_language
http://www.ethnologue.com/show_language.asp?code=glk
http://www.iranicaonline.org/articles/gilan-x
Avestan, Baluchi, Dari, Gilaki, Juhuri, Kurdish, Mazandarani, Ossetian, Persian, Parthian, Pashto, Shabaki, Tajik, Talysh, Tat, Wakhi, Yaghnobi, Zazaki