I hate to see anyone suffer, so a hint...
double digits...
less than 30
if you had "Impact" (the confidential picture history of Army Air Forces in World War Two), in which all eight books are just packed with endless goodies (such as this), you could just turn to page 18 of book 8 and there it would be. 
PSS.. one of my last two posts has the correct two digit number in it, in the correct sequence. That narrows it down to "5" possibilities.