Mike Umbricht
October 1, 2010: AstroAssembly
Timekeeping at Ladd Observatory
August 7, 1998: Monthly Meeting
Geared to the Stars
February 2, 1996: Monthly Meeting
Planetarium show
September 30, 1995: AstroAssembly
Using the Internet - An Introduction for Astronomers
December 3, 1993: Monthly Meeting
A Tour of the Sky from the Cormack Planetarium
October 2, 1993: AstroAssembly
The Sun
August 6, 1993: Monthly Meeting
A European Experience: Evaluating Planetariums
January 8, 1993: Monthly Meeting
New Discoveries in Astronomy
January 4, 1991: Monthly Meeting
Star Show and Slide Lecture
December 2, 1988: Monthly Meeting
