Hewlett-Packard. Your HP financial calculator: An introduction to financial concepts and problem solving., 2/1978

Hewlett-Packard. Your HP financial calculator: An introduction to financial concepts and problem solving., 2/1978, WBC Box 1 Item 10, Box: 1. William Bradley Calculator Collection, WBC. National Center for Atmospheric Research (NCAR) Archives. https://aspace.archives.ucar.edu/repositories/2/archival_objects/9404 Accessed December 17, 2025.