The
catalogue of books to be published
by John Helvin is being updated and will be available again soon.
On
this page you will find free PDF files you may download and distribute
freely.
Many
of the pdf
files that were
previously listed on this page are
being redesigned. They will start to be appear here again. New files
will also be posted. You will need
Adobe Reader to view the files. A link on the Links
page will take you to the Adobe website where you can download a free
version of the software.
Place the mouse cursor over an image to read
details of the file; click the image to load the file.