Great collection of Polyphony Magazine Scans in good quality : http://sonic.net/mjones/archive/docs/

CMOS Lfo by Thomas Henry Published in Polyphony Magazine

The vocal filters portion of the VP330 ,redrawn by chok ,as seen on the topic http://electro-music.com/forum/topic-53405.html ,you can download the whole manual for the Roland VP 330 at http://elektrotanya.com

                                Russian Moog type filter ,taken again from ruskeys.net .