This is a great vintage pattern for a pair of slippers, probably from the 1960s. It is a wonderful beginners' pattern with easy-to-follow instructions and some nice illustrations for extra help. It makes three sizes: medium-to-large (women's sizes 7 and over), small (women's sizes 5 and 6), and children's (4-6 years).
The pattern takes worsted weight yarn (3 oz. for largest size, 2 oz. for the other sizes), and size 8 knitting needles.
In this PDF download are scanned illustrated instructions (which are very easy-to-understand and helpful!).