Question: Who authored the book that was associated with the American restaurant chain Sambo's?
Context: Big Boy Restaurants International, LLC is an American restaurant chain headquartered in Warren, Michigan, in Metro Detroit.  Frisch's Big Boy Restaurants is a restaurant chain with its headquarters in Cincinnati, Ohio.  The Big Boy name, design aesthetic, and menu were previously licensed to a number of regional franchisees. Coast to Coast is a UK-based American restaurant chain specialising in American foods.  The company was established in 2011 and currently has 21 restaurants across the uk.  They are run by Restaurant Group, who also own Chiquito (restaurant) and Frankie & Benny's BJ's Restaurants, Inc. is an American restaurant chain.  It has 192 casual dining restaurants under names such as BJ's Restaurant & Brewhouse, BJ's Pizza & Grill and BJ's Restaurant & Brewery, the later of which has a brewery on the premises. Sambo's is a restaurant, formerly an American restaurant chain, started in 1957 by Sam Battistone, Sr., and Newell Bohnett.  Though the name was taken from portions of the names of its founders, the chain soon found itself associated with "The Story of Little Black Sambo".  Battistone, Sr., and Bohnett capitalized on the connection by decorating the walls of the restaurants with scenes from the book, including a dark-skinned boy, tigers, and a pale, magical unicycle-riding man called "The Treefriend".  By the early 1960s, the illustrations depicted a light-skinned boy wearing a jeweled Indian-style turban with the tigers.  A kids club, Sambo's Tiger Tamers (later called the Tiger Club), promoted the chain's family image. Umami Burger is an American restaurant chain that specializes in serving gourmet hamburgers.  The name refers to umami (savory) flavor, which is outside of the traditionally accepted tastes of salty, sweet, bitter, and sour.  The restaurant was founded by Adam Fleischman, and is part of the Umami Restaurant Group.  Unlike most burger restaurants, it has waiter service and most locations have a full bar.  After opening its first location in Los Angeles in 2009, Umami Burger has over 25 locations in California, Florida, Illinois, Japan, Nevada, and New York as of 2017. Larkburger is an American restaurant chain that makes its food from "all-natural ingredients".  It first opened in Edwards, Colorado in 2006.  Many of the restaurant's ingredients are made on-site.  The restaurant is known for using wooden trays instead of plastic ones, wrapping burgers in brown paper, and placing side dishes inside cardboard boxes.  This is all done to make the restaurant as organic and as eco-friendly as possible.  The store currently has 13 branches. Bambolino's is an Italian American restaurant in Houston, Texas.  The original Bambolino's Inc. restaurant chain was established by Ninfa Laurenzo and her family, who had established the Ninfa's restaurant chain.  The original Bambolino's was controlled by the holding company RioStar Corp. Souper Salad (stylized as Souper!Salad!)  is an American restaurant chain based in Dallas, Texas.  It is an all-you-can-eat buffet restaurant serving fresh salads, made-from-scratch soups, homemade breads, and more.  All locations are in the Southwestern United States, with the majority located in Texas.  The chain is privately owned and has been in operation since 1978.  As of October 2016, 21 locations were in operation. VIP's, alternatively written Vip's, is a defunct restaurant chain in the Western United States that operated from 1968 until the late 1980s, based in Salem, Oregon.  With more than 50 locations, it was once the largest restaurant chain based in Oregon.  It was a Denny's-style restaurant, a type that was commonly known at that time as a "coffee shop" but is now more commonly known as a casual dining restaurant.  Most restaurants were located near freeways and were open 24 hours.  At its peak, the chain had locations in five states: Oregon, Washington, Idaho, Nevada and northern California. The Story of Little Black Sambo is a children's book written and illustrated by Scottish author Helen Bannerman, and published by Grant Richards in October 1899 as one in a series of small-format books called The Dumpy Books for Children.  The story was a children's favourite for more than half a century.
Answer: Helen Bannerman