1) I notice that Daedalus books (see their WWW page) is offering the hardback of Brain Boyd's "Vladimir Nabokov: the American Years" at $14.98.
 
2) I have, at long last, been able to read Paul Maliszevski's article "Paperback Nabokov" in the elegant and elusive journal _McSweeney's Quarterly_ #4 (Late Winter 2000). Primarily devoted to the cover art of paperback editions of Nabokov's novels (in several languages), the essay discusses Nabokov's life-long (and often-losing) battle for accurate and tasteful cover illustrations.  It gathers together most of VN's comments on his covers and beautifully reproduces many of them in color. Maliszewski links VN's attitude toward his cover art to his general aesthetic approach. Beyond this, he has sought out and interviewed several of the artists who did the work (including Dmitri Nabokov).  It is a fascinating glimpse of the working conditions and attitudes of  the artists during the 50's and into the 70's.