http://www.americangrassfedbeef.com/ Here's your google search:
http://www.google.com/search?sourceid=navclient&ie=UTF-8&oe=UTF-8&q=%22grass+fed+beef%22 If you can at all though, find an honest farmer and have him raise it for you. There are many independent farmers who do this for their families and don't mind adding one more. The problem with this method is that you will have to buy a freezer because normally you have to buy 1/4 - 1/2 of the cow and that takes space!
Get an upright; I got a chest-style and really regret it because it's harder to organize the meat for retrieval.
Aside from the great taste, it's a real cost-saver. My beef, including processing, costs me less than $1.50/lb and it's cut and packaged EXACTLY as I tell them to.
If you do this, try to find a humane butcher who will slaughter and package himself. Your farmer should be able to tell you of a good one. It helps, at least me, to know that your cow was humanely slaughtered and not frightened to death at the time.
Another good place to get good beef is Arabic Halal stores because on top of their more humane slaughter methods, they absolutely forbid antibiotics, hormones etc in the meat, must feed it a natural diet, raise it in a natural habitat and allow it reproductive rights (in short a semi-real life!). You can read about Halal here:
http://www.islam-online.net/English/Science/2001/03/article8.shtml You can find halal stores near you here:
http://www.zabihah.com/_details.php?rest_id=49I quit buying store-bought meat 5 years ago when the disease was first noticed (just chalking one up for "conspiracy theorists here ;) because you can not trust our entire system to get this one right. People have been dying in this country from CJD for years but it has been criminally covered up to avoid a panic.
A preliminary 1989 study at the University of Pennsylvania showed that over 5% of patients diagnosed with Alzheimer's were actually dying from a human spongiform encephalopathy, meaning that as many as 200,000 people in the United States may already be dying from Mad Cow Disease each year. http://www.islam-online.net/English/Science/2001/03/article8.shtml I am not Islamic, I come from a medical family and have 2 parents & 5 sisters who are physicians and am not trying to push Islamic propaganda on you. You can research this further on your own. NO ONE in my family bought store-bought meat for years and switched to either Halal or getting cows raised. Neither method is really sure-fire but they're a hell of a lot less risky.
Two books to read for those who care are "Fast Food Nation" by Eric Schlosser and "Slaughterhouse" by Gail Eisnitz.
Peace, good luck and kudos to you.
PS. If you have pets... you might want to think of them too. Peace