I'm not sure if the Singer site goes back far enough but you might try there for a manual.
Singerco.com
Rodney

I found a manual for the 12 on the Singer site here: Singer 12 Manual.

Congratulations on both your machines - they're beautiful! What does the cabinet of the 66 look like? I agree with Skyangel; those probably are the original hardware on the 12 cabinet (I've seen them on a few old Singer cabinets, especially with that drawer style).

Judy,

The 66 is not a 66-16. The -16 has a stitch control lever with a back tack feature, yours has the old stitch length knob.
It is most likely a 66-6.
My info came from ISMACS here: { http://www.ismacs.net/singer_sewing_...sses-1-99.html }.

purplefiend,

The 66 is threaded correctly for embroidery and darning. For regular sewing the thread goes under the thread regulator, for embroidery and darning it goes through the eye of it.


Joe