Castanets

  Castanets
Wikipedia: Castanets
Google Scholar: Early Castanets
Google Books: Early Castanets
Google Images: Early Castanets
Google Video: Early Castanets

Clappers

  Clappers
Google Scholar: Early Clappers
Google Books: Early Clappers
Google Images: Early Clappers

Cymbals

  Cymbals
Wikipedia: Cymbal
Wikipedia: Zill
Google Scholar: Early Cymbals
Google Books: Early Cymbals
Google Images: Early Cymbals
Google Video: Early Cymbals

Dumbek

  Dumbek
Wikipedia: Goblet drum
Google Scholar: Dumbek
Google Blogs: Dumbek
Google Books: Dumbek
Google Images: Dumbek
Google Video: Dumbek

Frame Drum

  Frame Drum
Wikipedia: Frame drum
Wikipedia: Bendir
Wikipedia: Bodhran
Wikipedia: Daf
Wikipedia: Dayereh
Google Scholar: Frame Drum
Google Blogs: Frame Drum
Google Books: Frame Drum
Google Images: Frame Drum
Google Video: Frame Drum

Jew's Harp

  Mouth Harp
Wikipedia: Jew's harp
History of the Jew's Harp
Michael Wright's Jewsharper Pages
The Dutch Jew's Harp Pages
Jew's Harp, Playing and Magic
Jews Harp Info
Google Scholar: Early Jew's Harp
Google Blogs: Early Jew's Harp
Google Books: Early Jew's Harp
Google Images: Early Jew's Harp
Google Video: Early Jew's Harp

Kettledrum

  Kettle Drum
Wikipedia: Timpani
Kettledrum
Google Scholar: Early Kettledrum
Google Books: Early Kettledrum
Google Images: Early Kettledrum
Google Video: Early Kettledrum

Nakers

  Nakers
Wikipedia: Naker
Wikipedia: Naqareh
Wikipedia: Nagara (drum)
Wikipedia: Kudum
Google Scholar: Nakers
Google Books: Nakers
Google Images: Nakers
Google Video: Nakers

Rattle

  Rattle
Wikipedia: Rattle
Wikipedia: Ratchet (instrument)
Google Scholar: Early Rattle
Google Books: Early Rattle
Google Images: Early Rattle
Google Video: Early Rattle

Side Drum

  Side Drum
Wikipedia: Snare drum
History of the Snare Drum
Google Scholar: Early Side Drum
Google Books: Early Side Drum
Google Images: Early Side Drum

Tabor

  Pipe and Tabor
(see Pipe and Tabor on the Early Wind Instruments page)
Wikipedia: Tabor

Google Scholar: Tabor
Google Blogs: Tabor
Google Books: Tabor
Google Images: Tabor

Tambourine

  Tambourine
Wikipedia: Tambourine
Wikipedia: Riq
Wikipedia: Dayereh
Google Scholar: Early Tambourine
Google Books: Early Tambourine
Google Images: Early Tambourine
Google Video: Early Tambourine

Triangle

  Triangle
Wikipedia: Triangle
Google Scholar: Early Triangle
Google Books: Early Triangle
Google Images: Early Triangle
Google Video: Early Triangle

Xylophone

  Xylophone
Wikipedia: Xylophone
Wikipedia: Glockenspiel
Google Scholar: Early Xylophone
Google Books: Early Xylophone
Google Images: Early Xylophone
Google Video: Early Xylophone

Other
Wikipedia: Percussion instrument
Percussion
Percussion in Medieval and Renaissance Dance Music
Middle Eastern Drum History
Drum
Early Percussion Instrument Businesses
Medieval and Tudor percussion instruments
Google Scholar: Early Percussion Instrument
Playing a Middle Eastern Percussion Instrument
Google Books: Early Percussion Instrument
Google Images: Early Percussion Instruments
Google Video: Early Percussion Instrument

For other instruments, see:  Brass, Keyboard, Percussion, Strings, Winds, Mixed.