The Firebird Rocket is the penultimate volume of the original, traditional Hardy Boys book series-- the hardbound ones with the blue spine and back cover. I read the earlier books in the series in my youth but considered myself too old for the last handful when they appeared, but recently I decided to complete the set. This one appeared in 1978 and was written by Vincent Buranelli under the Franklin W. Dixon house name. The first thing I noticed was the blurbage on the back cover had been changed to "Anyone from 10 to 14 who likes lively adventure stories..." For decades they had specified "Boys," so I guess girls didn't have to hide them anymore. (It was just like in Next Gen, when they made it "...where no one has gone before.") It was a fun book, typical of the last decade of the original Hardys. Lots of action and travel, not much in-depth mystery or investigation, not too much character or description... Dad's working on a case involving a rocket and Joe and Frank help out and Chet goes along. (Actually, poor Chet causes such commotion and confusion that I wonder why they didn't sneak off and leave him.) There are several really poor uncredited interior illustrations, a big step down from earlier volumes. There was a comedic episode early-on that reminded me of the very early books, in which Chet tests his model rocket only to have in crash into a chicken coop. He later wins a fifteen-hundred-dollar prize from the high school science fair for the rocket (which I sure don't remember being an option in high school in the 1970s!), which he uses to pay his passage to Australia where the mystery is to be solved. The Boys didn't stay too close to home in the later books, even though they never aged. It's a very quick read, of course, but still fun after all these years.