Well this specific guy I mentioned is James Yoder. There is also Daniel P. Esh in Lancaster County in PA. And Jonas and Henry Lapp in Chester County PA.
http://www.newhousenews.com/archive/murray112805.html
http://www.columbusdogconnection.com/PuppyMillArticles.htm
There is also
this news report. This particular article mentions Curtis Beachy who is a private breeder "in the heart of Amish country", but I will give you that one, it doesn't actually say that HE is Amish himself.
Plus I know of specific rescues who went to the Amish run auctions. I just know of this all from working at various rescue shelters around here and from the 2 humane officers I worked with in the past few years. I have heard the reports of what they have found in their years of being officers.
Many of the Amish run mills are in Tuscarawas County, Holmes County, Morrow County, Coshockton County. And Lancaster County in PA.
The New Jersey SPCA has a small article about the dogs they removed from one as well.
http://www.njcapsa.org/ "The majority of puppy mills are located in the Midwest, but several hundred are also found in PA's Lancaster County, where Amish & Mennonite breeders flourish in “the puppy mill capital of the East."
There is also a Mennonite-owned puppy mill in New York's Finger Lakes Region.
AND last but not least, Petland buys from the Hunte Coorporation which buys directly from teh Amish and Mennonite Puppy mills.
Here is a list of a few in Millersburg, OH which is Holmes county:
-Stoneywoods Kennel, Mayacre Kennel and Redoys Kennel run by Ervin, Myron, Naomi and Andrew Yoder
-Creekside Kennels run by Christ Yoder
-M & R Kennel run by Marlin Troyer
-Weaver Kennel run by Andy and Lena Weaver
-Long Lane Kennel and Golden View Kennel run by Ervin Raber
-The Buckeye Dog Auction run by Ella Raber
I think that should do it.