And of course it's the same usage as we recall from our childhood Xmas-gift books like "The Beano Bumper Xmas Comic" or "The Boys' Bumper Book Of Sports and Hobbies/Girls' Bumper Book Of Fashion" &c &c &c...

NB these all ones I dredge up from my actual memory; so don't blame me, blame the publishers, for implied sexism in these last examples.