Of course, the real work was adjusting my library to accommodate the new purchases. My books all are alphabetized strictly by author and then title--except series (which are shelved according to plot chronology) and history (which are organized by geographical region, then alphabetized by title)--so any new additions require shuffling all the other books that are downstream. I think this took about half an hour, but it does make finding things later awfully easy indeed.
In any event, these four covers now are in their appropriate galleries. And I confess that for my next used book run I may have my eye on an old Podkayne of Mars and a new Time Enough for Love...
Rafeeq