Follow the links below to relevant Chicago Manual of Style chapters for examples and explanatory notes on citing a variety of personal communications, including letters, interviews and emails. Note, bibliography entries are not required for unpublished material such as original letters and emails.
Letters in published collections 14.111
Collections of (original) letters 14.228
Published or broadcast interviews 14.213
Unpublished interviews 14.211
Unpublished interview with a person who wishes to remain anonymous 14.212
Personal communications 14.214