Since Bill was still quite active at the time with The Price Is Right and I've Got A Secret, it would seem likely that he was merely a studio host for this series, and that he didn't go traipsing around the world on his bum leg to cover the events in person.

Combing newspaper archives, we've found a number of stations which aired this series, most notably WNBC in New York City. The series premiered there on October 7, 1962 and appears to have concluded its run by December, suggesting that as few as 13 episodes may have been produced. In other cities, including Detroit (see below), the series didn't even premiere until the following spring.  Given the unusual and obscure nature of the events that were covered, spoilers must not have been much of problem!

EPISODE GUIDE 
The listings below are from a set of Michigan Edition TV Guides which show the series airing on WWJ, the NBC affiliate in Detroit, at 4pm Saturday afternoons.  Thanks to Jimmy Owen for finding the original WWJ listings!  As unlikely as it is that any of these episodes will ever turn up, it's still interesting to get some idea about the interesting events covered by the series.  Items come verbatim from the TV Guide listings.