Colorado - Greek Immigrant Articles
If you live in the United States, chances are that your local library has a subscription to HeritageQuest Online (maybe even allowing you access online from home). From there you can search PERSI (The Periodical Source Index) at the Allen County Public Library, Fort Wayne, IN. You can print a form online and order a copy of any article listed in the PERSI Index.
Here is the title of an article pertinent to Greek immigrants in Colorado:
"John Rougas recalls being Greek in Pueblo, age 88"
Pueblo Lore. Pueblo CO: May 2005. Vol. 30 Iss. 5
"Saint John's Greek Orthodox church"
Pueblo Lore. Pueblo CO: Apr 2002. Vol. 27 Iss. 4