I have updated the ibiblio copy for numerous corrections (not just for this thread) over the last few days. The list of affected files and images follows:
DC V1:dcmeter.sml contrib.sml 00502.png
AC V2:basicac.sml contrib.sml
Semi V3: bjt.sml diode.sml contrib.sml theory.sml 03288.png 03304.png 03392.png
Digital V4: boolean.sml contrib.sml