I read somewhere last year that
Allegory of Love was being considered for publication by Cambridge University Press under their inexpensive paperback imprint Canto. Most of Lewis' literary works have already been released by them (
An Experiment in Criticism, Studies in Medieval and Renaissance Literature, Studies in Words, and
The Discarded Image.) You might want to wait a bit and see if they do the same for
Allegory of Love.
As for Lewis' volume of the OHEL,
16th Century excluding Drama, I've got good news, and bad news :) . The good news is, it is still in print, though Oxford University Press has renamed it
Poetry and Prose in the Sixteenth Century. The bad news is, it costs $90.25 new. Ordering info
here.
It would be appreciated that, if you order it through Amazon, you go there via one of the links in the Wardrobe bookstore (button above). That way, a few cents of the purchase price will go to help offset our server costs, and it won't add anything to your purchase price.
Hope this helps.
Selah,
Sven