One example of alliteration is the tongue-twister with a Roud Folk Song Index number of what?
19745
Title: Peter Piper
Passage: "Peter Piper" is an English-language nursery rhyme and well-known alliteration tongue-twister.  It has a Roud Folk Song Index number of 19745.
Title: Did You Ever See a Lassie?
Passage: "Did You Ever See a Lassie?"  is a folk song, nursery rhyme, and singing game.  It has a Roud Folk Song Index number of 5040.
Title: Alliteration
Passage: Alliteration is a figure of speech and a stylistic literary device which is identified by the repeated sound of the first or second letter in a series of words, or the repetition of the same letter sounds in stressed syllables of a phrase.  "Alliteration" is from the Latin word "littera", meaning "letter of the alphabet", and the first known use of the word to refer to a literary device occurred around 1624.  Alliteration narrowly refers to the repetition of a letter in any syllables that, according to the poem's meter, are stressed, as in James Thomson's verse "Come…dragging the lazy languid Line along".  Another example is "Peter Piper picked a peck of pickled peppers".
Alliteration Peter Piper