Knitking Magazine Nov/Dec 1972 Volume 9 No 2 Knitting Machine Patterns

Scientific American 1972 Magazine Lot (June Aug Nov Dec – Martin Gardner

Machine Design Magazine April 6 1995 Penton Basics of Design Engineering Safety

Machine Design Magazine Feb 1974 Metals Penton Engineering

Machine Design Magazine Jun 1977 Mechanical Drives Penton Engineering

Machine Design Magazine Apr 1970 Electric Motors Penton Engineering

Machine Design Magazine Sep 1979 Fluid Power Penton Engineering

Machine Design Magazine Sept 1973 Seals Reference Penton Engineering