If anybody has any information on Mazza's from Verscio, it would be very helpful. My great grandpa immigrated to Canada from Switzerland, and all we know of the family is his parent's names. Olimpio and Maria Mazza were my great-great grandparents, and my great grandpa was Andrea Mazza... his name in Canada was Andrew Antonio Mazza though... he had 4 sisters, but one died very young.
I too am descended from an immigrant from Ticino. Not much information on the web. However, the churches and city governments have tons of records back at least 200 years. I just returned from Bellinzona, where I obtained tons of info. It is worth the trip. If your family is one of the "patriarch" families in a city you will really be rewarded by going.
Obviously Italian or German would help. I found distant relatives (an unusual surname helped) over there that went with me to the churches and called record offices. All the church documents are in Latin. The city Governments have tons of records, but it is difficult to find someone who really wants to help you. I don't know of any way to get information out of them from over here. Hopefully someday genealogy will become enough of a hobby there that they will get some of those documents on line.