The frame tubes and seat post look like a large diameter type just going by the photos. The fork needs a lot of straightening work, but maybe a shop that does a lot of frame and fork work could get it there. The fork has braze-on tabs for the fender braces, and fixing the fork is a must-have to really keep this bike up and going. I don't see a replacement being a great solution in this case. Those white fenders with pin stripes probably will look really good with that bike once it is cleaned up. The brake lever looks like one of the stamped metal ones that the balloon tire people go after, and the rear hub probably the same sort of thing. These bikes tend to get parted out, especially the ladies' frames.