Machine Design Magazine April 1975 Penton Electric Motors & Controls Reference

Machine Design Magazine June 1976 Penton Mechanical Drives Reference Issue

Machine Design Magazine February 1973-1974 Penton Plastics/Elastomers Reference

Machine Design Magazine June 1973-1974 Penton Mechanical Drives Reference Issue

DIRT BIKE MAGAZINE-JULY 1975 PENTON 250 CR250M1 ELSINORE MAICO 400MX VINTAGE

1978 MACHINE DESIGN MAGAZINE, Reference issue, Motors, Relays & Switches, Solid

Interior Design Magazine April 1977 - Vintage Historical Architecture Reference