As per "Oh, for the Love of Vintage!," we've attached an interesting look at the history of this plastic, which was an eminently affordable answer to ivory:
"Created in 1869 by John Wesley Hyatt, Celluloid was one of the first plastics ever made. Celluloid is a semi-synthetic thermoplastic made from nitrocellulose and camphor. The earliest form of Celluloid was highly flammable, so in 1927 the nitrocellulose and camphor were removed and replaced by vinegar (making it less flammable)."
Not sure if all these pieces were initially sold together or if they were assembled separately. Included are a powder container; hair receiver; talcum container with a frilly initial "R" on the lid; a ruffle-edged, hinged box measuring 5" x 3 1/4" x 1 1/2" deep (imprinted with the letter "A" on the bottom; and a small jar for creams or what have you. All pieces are in extremely good to excellent vintage condition.