Scripts
1st session Yoga Nidra script.
2nd session Yoga Nidra script.
3rd session Yoga Nidra script.
4th session Yoga Nidra script.
Links
You can order tratak stands from here, if you are interested. He also makes lovely malas.
Yoga Nidra by Swami Satyananda
Asana, Pranayama, Mudra, Bandha by Swami Satyananda