The phrase "booklet of" is correct and usable in written English.
You can use it when referring to a collection of booklets. For example, "I picked up a booklet of recipes at the bakery."
She is keeping an archive of the pictures in a booklet of CD-ROM's.
Prepare a booklet of weird and wacky facts about the Supreme Court.
He has obtained a grant to print a booklet of the portraits.
Coming with a booklet of countercultural images and texts, it really broke convention for album packaging.
She was the author of "The Naked Truth," a small booklet of sexual poetry.
("By George Balanchine," a booklet of quotations, was published in 1984, the year after he died).
Kit includes dummy and booklet of useful phrases, including, "Hallo, you!
And in general album purchases on iTunes come with a downloadable booklet of credits.
Tamara flicks through a booklet of cotton items that are in high demand in Israel.
Those written materials included liner notes and a booklet of recipes for Armstrong's favorite Louisiana dishes.
And why does the booklet of ink drawings he hands her need safekeeping?
