I have scanned the front and back of the +13 WPM info sheet and uploaded to Flickr as JPEG's.http://www.flickr.com/photos/93888532@N07/
The info is minimal and I don't expect there is any difference between the sheets for each tape other than the speed number. It was a great tape and got me able to copy over 15 wpm at the time, in the late 70's.
If you have problems downloading let me know. bill
p.s As stated in the info sheet, there is no 'check sheet'.