Well I tried to find it but the link is dead, "ERROR 404"
But if it is an EFHW = End Fed Half Wave you can find it here:
http://www.lnrprecision.com/manuals/Check into the manuals, you will find all the informations for any bands and the last one
which worked as advertized, The "EF-QUAD" for 4 bands 40/20/15/10 which you can buy or built yourself.
Those little jumpers for various bands can be found in automobile parts into the electrical parts dept.
A 9:1 UNUN and a wire plus the material for the jumpers.
It is not good for WARC bands because it is not harmonically related, but for 40 & higher check the SWR curves in the manual, those curves are from an antenna analyser RIG EXPERT which is really great to keep our antenna tests graphics for future references.
If you have more space you can do it longer as to add 80 meters to make it a 130 ft simple multi band wire antenna.
Let us know what you think about that
Have fun, & 72 Michel