Van Oss has been sole host of the program since 1981.

He has been sole host of the show since 1990, when his father retired.

But from 1933-1937 Montlhery would become the sole host of the event.

She become sole host on March 2010 and has remained ever since.

The following year, he became the sole host.

The Austrian palace, with its superior access and facilities, became the sole host.

More important, it is the sole host for Monarch larvae.

Gilden left the show a month later, leaving Ellison as the sole host.

Noble eventually became sole host, and produced the series after 1975.

He became the sole host of the program in 1996.