They're late 1960s or early 1970s era Raleigh DL-1s. They were made in Nottingham, England and are US market spec rod brake roadsters. They look to be in average condition, but will clean up pretty well. These bikes are well-made, but unfortunately were often subjected to commuter/student/campus conditions where they got wet and used in sometimes-foul weather.
The rear hub shells will have date codes for the month and year in which the hub was made (giving a decent estimate of when the bike was made).
The rear racks were extra add-ons that are nice to have. The men's bike has its pump, which is a big plus because they get lost (as has happened on the women's bike).
The saddles are relatively valuable if they don't have any breaks or deep cracks.
They will need a complete going over before you can ride them, from the look of it. The rod brake system is not overly difficult to service, but you should read up on it a bit before starting because it can be very frustrating to adjust if you go in blindly without having done it before. The hubs will need to be cleaned and re-lubed probably. The rust will clean up, and the paint and chrome on these are usually decent.
The men's bike is the tall 24 inch frame on 28 x 1-1/2 wheels, which kind of limits the market because you have to be pretty tall to ride them. The women's is shorter but still pretty tall for a ladies' bike. But these are great if you have a couple tall riders. Care should be taken to get used to the braking system before you go out on a busy road. Panic stops as would be available on modern bikes are not available on these. The brakes are acceptable in good conditions, but will be anemic if maladjusted or wet.