Fiber Cement Siding

I am looking to purchase the old style cement siding. Where can I find the names and telephone numbers of these companies?

Thank You,

John Carollo

I need to replace some of the old shingles on my house. Purity shingles, straight bottom, look the closest but have a wavy lines on the surface. I need ones with strsight lines runnin up and down. Do these exist any more?