The International Slide Rule Museum in Louisville, Colorado, founded in 2003 by Michael V. Konshak, is devoted to slide rules and related mathematical instruments that were once central to engineering, science, and technical education. Its collection includes examples from many makers and periods, showing how these analog calculating tools developed over time. Often regarded as one of the largest repositories of slide rules and logarithmic calculators, it serves as a specialized center for the history of mathematics and engineering. Konshak directs and curates the institution, which is governed by a nine-member board and preserves the legacy of pre-digital calculation.