Phenylpropanolamine (PPA) was, by far, the best over-the-counter decongestant.
So, what became of these items? The OAG, maps, and directories were replaced by websites and eventually apps on smart phones — the Swiss army knife of the road warrior. Likewise, calling cards have almost disappeared. Most parents became too concerned with nutrition to give their kids candy or too mistrustful of strangers to accept it. ATM networks (and ATMs with multi-lingual user interfaces) did away with travelers checks. The FDA banned PPA because of side-effects; but passenger aircraft today provide better control of the cabin altitude, making it easier for the allergy-afflicted to keep one's ears clear during descent.