Microchip Series 3:1YY
W. Logan Fry 2001

Circuitboard Series 3:1YG
W. Logan Fry 1999
  

Microchip Series 2:A
W. Logan Fry 1991
    

 Microchip Series 2:Poly
W. Logan Fry 1991
    

 Microchip Series 2:EPROM
W. Logan Fry 1991
    

 Microchip Series 2:Diff
W. Logan Fry 1991