The Data Stick sells for $49.00 (free shipping).
Over six gigabytes of information related to slate roofing are on this 8 Gb USB data stick, which is also a bottle opener.
Included on the Data Stick are the Slate Roof Bible, 3rd edition (published June 2016), in its entirety, cover to cover, in PDF format. Also included are 86 video clips regarding various aspects of slate roofing, including installation, flashing, tools, equipment and more (see list below).
All eight issues of the Traditional Roofing Magazine are included in PDF format, cover to cover. These issues include many informative and instructional articles related to slate and traditional roofing.
Slate Roofing Contractors Association slate installation guidelines, available for free download online, are conveniently included in this drive, including in the Spanish language.