For examples in popular music, see “Common-Tone Diminished 7ths” on the page Other Chromatic Chords.
For examples in popular music, see “Augmented Dominants” on the page Augmented Chords.
Paula Maust, Expanding the Music Theory Canon: Common-Tone Diminished 7ths, Chromatic Mediants
Diverse Music Theory Examples: Common Tone Diminished 7th Chords, Augmented Triad, Dominant 9th Chords, 11ths and 13ths
Open Music Theory Harmony Anthology: See the section “Augmented Triads” and “Common-Tone Diminished 7ths”
Yale Musical Examples Database: See the “Chord Types” tab at the bottom.