You will need a copy of WinZip (Free) or an equivalent to unzip the downloads.

Most of the documents are in HTML format using a proprietary JavaScript document pager.

Some documents may be in Adobe Acrobat slideshow format, you will need a copy of Adobe Reader (Free). Use the 'Page Up' and 'Page Down' keys to navigate the slideshow document. You may press the 'Esc' (Escape) key at any time to exit the slideshow and expose the Adobe Reader options.

Some downloads will take considerable time depending on your internet speed connection.
Before continuing you may want to visit the Download Instructions.

You will need a User Name and Password to access the downloads. The downloads are the collective work of collectors of padlocks and other hardware. Once you have contributed to this effort you will be given access to all of the listed documents. It is our hope to share as many documents as possible.

These documents are not to be sold or conveyed in any manner. They are to be used for personal educational purposes only as put forth in the "Fair Use" Copyright Laws.

You may contact me at: David.Heuermann@Yahoo.com.