• HP-67 Filters Solution Book (Ported to HP-41C)
  • Butterworth Active Filter Desgn, Low Pass
  • Butterworth and Chebyshev Filter Group Delay
  • Butterworth and Chebyshev Filter Order
  • Butterworth and Chebyshev Filter Response
  • Butterworth and Chebyshev LP Normalised Coefs
  • Normalised LP to BP Transformation, 1,2,6,7
  • Normalised LP to BP Transformation, 8,9,10,11
• HP-67 Games Solution Book (Ported to HP-41C)
  • Battleship
  • Bell-Fruit (Mills Standard)
  • Blackjack with a Permanent Bank
  • Contract Bridge Scoring Pad #1
  • Contract Bridge Scoring Pad #2
  • Duplicate Bridge Score
  • Hangman (HP41 Modified)
  • Hangman (HP67 Version)
  • Pro Football Simulation
  • Risk
  • Turn the Die
  • Word Encoder
  • Word Game Subroutine (HP41 Modified)
  • Word Game Subroutine (HP67 Version)
• HP-67 Optics Solution Book (Ported to HP-41C)
  • First Order Raytracing by Matrix Methods
  • Fraunhofer Diffraction by Spherical Particles
  • General Lens Tracer
  • Kubelka-Munk Diffusing Layer
  • Lens Calculations
  • Optical Desgin 2 (Trig Ray Trace)
  • Optical Design 1 (Achromatic Doublet) (Card A)
  • Optical Design 1 (Achromatic Doublet) (Card B)
  • Paraxial Ray Tracing #1 - Tracing
  • Paraxial Ray Tracing #2 - Storing
  • Ray Trace
  • Ray Trace Parabola
  • Ray Tracing (Spheres, Paraboloids, Flats)
• HP-67 Photo Dark Room Solution Book (Ported to HP-41C)
  • Cibachrome Reciprocity Correction
  • Color Print Processing (Unicolor B)
  • Color Printing Factors
  • Color Printing Factors ; New Paper
  • Image Projection Data
  • Macro-Photography and Enlarging
  • Photo/Image Display Parameters
  • Print Viewing Distance
  • Subtractive CP Filters Density
  • Time,F-Stop,Magnification,Paper Speed
  • Tri-Color Print Exposure