Mail Order Knitting Patterns were designed in a far lessor number than crochet.   In fact, a comparison of the two within my current collection shows more than 80% are crochet.   Now, that is not to say there are not quite a few delightful knitted Designs, particularly in outer wear - Jackets, Cardigans, Poncho's and Shawl.  I invite you to spend some time looking through the patterns.  

If you need even more inspiration, there are many more knitting patterns in another section from the major yarn manufacturers.