Here are a few images and links mentioned in the podcast.
Osaka Full Color News (1875)
Pictorial Book on the Penal Affairs of the Tokugawa Government. (1893)
Link to Meiji University online presentation of the Pictorial Book on Penal Affairs:
Image from “Moral Lessons Through Pictures of Good and Evil” (1880).
I said 1875 in the podcast. I apologize. The date of this print should be 1880.
“Prawn Torment” in Big Secret Book of Punishments (1836)
“Suspension Torment” in Big Secret Book of Punishments (1836)
Links to bondage in shunga (pornographic pictures) on SMPedia.com:
This page seems not to like links with kanji in them, so if the link doesn't work for you, you can view the less happy faced images by cutting the kanji at the end of the links below and pasting them into the search field on the lower-left side of the SMPedia page.
Shunsho Katsukawa http://smpedia.com/index.php?title=勝川春章
Kuniteru Utagawa: http://smpedia.com/index.php?title=歌川国輝
Kuniyoshi Utagawa: http://smpedia.com/index.php?title=歌川国芳