@cwiertka @paularcurtis The place to look for more details would be in: 神田由築「飴売商人 」（吉田伸之編『商いの場と社会』）It's on HathiTrust online. Yoshida also has some of his own work on sweets sellers, which I haven't read (citation link: https://t.co/3rWMjwxJD2). Hope this helps!