Any Hospital Diploma Programs Out There??

If anyone knows of any hospital in the United States that offers a Diploma program or Certificate Program in order to get an ADN, please let me know. I heard there are not that many still around, but there are hospitals that have their own School of Nursing within, and you can work there and gain practical experience while they certify you to be an RN. I think that was the original way they taught nurses to be LPN or RN a long time ago. By teaching them in the hospital and certifying them there. I am just trying to figure out where they are! I'm in Texas but I've heard most may be on the East coast, but I'm not sure. I would love to go that route, because I am trying to get practical training asap while earning my ADN because I plan on doing missionary work in India soon, and I need to practically learn hands-on as much as I can in a real hospital setting, and come out being an RN with already learned experience in the field. Someone please help me out! i don't know my options -Robin