African print fabric/Dutchwax fabric.
It is 100% cotton. The fake ones usually have a polyester mix. It originated from the Dutch for Indonesia textile market. They are not drapy and you can prewaah them before using to eliminate a little bit of the wax coating, with a mild soap (no harsh detergent) and hot water to prevent color washing. Hand washing is preferable to machine, but when you use machine, use the machine cold wash setting.
Examples of Vintage Dresses and Accessories by Era according to Ashley Kane.
1920s: Flapper dresses, long beads, heeled Mary Janes, and T-strap shoes.
1930s: Bolero jackets, puffed and fluttery sleeves, fedoras, oxfords, slingbacks, and peep-toe shoes.
1940s: Straight tweed and wool plaid skirts, reptile handbags and shoes, platform shoes, brooches.
1950s: Full skirts and petticoats, shirtwaist dresses, fur trim, twin sweater sets, strings of pearls, Wayfarer sunglasses.
1960s: Early — Anything Jackie Kennedy style — elegant box-jacket suits and pillbox hats; late — bell-bottom jeans, flowing tops, hippie/bohemian style.
1970s: Platforms, Birkin bag, flare jeans, boho-chic, boots (especially thigh-high), block heels, khaki.1980s: Izod golf shirts, gold chains, blazers and sweaters with strong shoulder pads, stilettos.
1990s: Baggy flannel shirts, leggings, big sweaters, chokers.