"Our Deportment, or the Manners, Conduct, and Dress of Refined Society" by John H. Young is a book that speaks about the principles that governed etiquette in the 19th century.
The book speaks about common etiquettes in the 19th century. Etiquette covered include but are not limited to:
In general, it contains important 19th-century insights, training, and suggestions for how people should behave at home.
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