- The Lost Art of Logarithms (lostartoflogarithms.com)
An online book-in-progress by Charles Petzold wherein is explored the utility, history, and ubiquity of that marvelous invention, logarithms including what the hell they are; with some demonstrations of their primary historical application in plane and spherical trigonometry.
- Bruce Vento Nature Sanctuary (Wikipedia)
The Bruce Vento Nature Sanctuary is a city park in the Mississippi River corridor in Saint Paul, Minnesota. Just east of the city’s downtown district, the sanctuary includes towering limestone and sandstone bluffs that date back more than 450 million years, spring-fed wetlands, abundant bird life, and dramatic views of the downtown Saint Paul skyline and Mississippi River. The park was opened to the public on May 21, 2005, and was named after its early supporter U.S. Representative Bruce Vento.