[Trisquel-users] What is Trisquel 7 equivalent of libusb-0.1.12 ?

[amenex]

The 5-1/4 inch floppy reader that I'm installing in a Trisquel 7 system wants  
me to install libusb-0.1.12 in order to compile a suitable linux driver.

Trouble is, sudo apt-get libusb-0.1.12 doesn't get me anywhere, nor does  
apropos libusb.

Any suggestions ? There are other libusb-x.y.z's available; would one of  
those be appropriate ?