Springfield farms has good quality beef and eggs. They set up stands at a couple local farm markets, but you can also order via email and pick up at the farm (I have had them bring like whole briskets and larger cuts to one of the markets for me, but a whole cow seems like more than they could bring to something like that). I'm not sure if they can accommodate a whole cow, but it's definitely worth an ask, great qualify food and nice people. The farm is out in Baltimore county.