Inception:

The TDSL (Tube Data Sheet Locator) website was conceived by Duncan Munro as a search engine in the late 90's to capture the growing number of electronic valve/tube data sheets out in the World Wide Web.

Sponsorship:

TDSL is sponsored by Templar Mace Limited, a consultancy company owned by Duncan. TML provide the annual hosting and cloud storage costs which allow over 1,000 visitors per day to enjoy this free resource.

Heroes: Many thanks go to the following for their assistance, support, and contributions towards this project since it started in 1997 - without them, TDSL would not be what it is today.