Question: Where is the headquarters of the Charles P Lazarus founded toy retailer who carried the DC Superheroes Mattel figures in 2006?

Context articles: DC Superheroes (toys)
British Association of Toy Retailers
Charmin' Chatty
The Entertainer (retailer)
Toys &quot;R&quot; Us
DC Universe
Movie Masters
Mattel
Just Imagine...
Toytown Stores

DC Superheroes is a collection of action figures originally produced by Mattel in early 2006.
 It is divided into three different lines - the , with figures based on the animated "Justice League Unlimited" series; the S3: Select Sculpt Series, featuring more comic-accurate figures in the 6" scale; and a 12" figure line.
 The S3 line is further divided into two lines - one featuring Batman, and the other featuring Superman.
 Series 1 of the S3 line began shipping just after Christmas 2005 to Wal-Mart and began arriving in retailers like Target and Toys "R" Us approximately one month later.
 The figures have characteristics similar to the competing Marvel Legends line in terms of detailed sculpting, articulation, and including a comic book or diorama with each figure.
The British Association of Toy Retailers (BATR) is an association that represents their members to the United Kingdom government and the European Commission.
 It promotes the role of the toy retailer and the value of toys to the consumer.
 It represents about 75% of the toy trade.
 It is based in Gainsborough, Lincolnshire.
Charmin' Chatty was a doll produced by the toy company Mattel in 1963 and 1964.
 The doll, introduced at the American Toy Fair in New York City in March 1963, belonged to a line of highly successful talking dolls introduced in 1960 (Chatty Cathy was the first of these dolls).
 Other chatty dolls in the line (and the year they were introduced) were Chatty Baby (1962), Tiny Chatty Baby (1963), Tiny Chatty Brother (1963) and Singin' Chatty (1965).
 Mattel trademarked the word "chatty" in the 1960s, and some of the packaging for its talking toys carried the tag line, "A Chatty doll by Mattel" or "A Chatty toy by Mattel".
 Mattel dolls such as Drowsy, Baby Cheryl, and Tatters had the tag line on their boxes that said, "A Chatty Doll by Mattel."
The Entertainer (Amersham) Ltd. is the UK's largest independent toy retailer, which operates 124 stores.
 The company was founded by the husband and wife team Catherine and Gary Grant in 1981, when he purchased a local toy shop in Amersham, Buckinghamshire, England.
Toys "R" Us, Inc. is an American toy and juvenile-products retailer founded in 1948 and headquartered in Wayne, New Jersey, in the New York City metropolitan area.
 Founded by Charles P. Lazarus in its modern incarnation in 1957, Toys "R" Us traces its origins to Lazarus' children's furniture store, which he started in 1948 before adding toys, eventually shifting his focus.
The DC Universe (DCU) is the fictional shared universe where most stories in American comic book titles published by DC Comics take place.
 DC superheroes such as Batman, Superman, and Wonder Woman are from this universe, and it also contains well known supervillains such as the Joker, Lex Luthor, and Darkseid.
 It should be noted that in context, "DC Universe" usually refers to the main DC continuity.
Movie Masters is an action figure toyline from Mattel based on popular movie franchises most notably DC Comics.
 The line has featured characters from the films "Superman", "Avatar", "The Dark Knight" trilogy, "Green Lantern", and "Man of Steel".
 Figures in the line are sculpted by Four Horsemen Studios, who also sculpted figures for Mattel's DC Superheroes and DC Universe Classics lines.
Mattel, Inc. ( ) is an American multinational toy manufacturing company founded in 1945 with headquarters in El Segundo, California.
 In 2014, it ranked #403 on the Fortune 500 list.
 The products and brands it produces include Fisher-Price, Barbie dolls, Monster High dolls, Ever After High dolls, Winx Club dolls, Hot Wheels and Matchbox toys, Masters of the Universe toys, American Girl dolls, board games, and WWE toys.
 In the early 1980's, Mattel produced video game systems, under its own brands and under license from Nintendo.
 The company has presence in 40 countries and territories and sells products in more than 150 nations.
 The company operates through three business segments: North America, international, and American Girl.
 It is the world's largest toy maker in terms of revenue.
 On January 17, 2017, Mattel named Google executive Margo Georgiadis as its next CEO.
Just Imagine... is a comic book published by American company DC Comics.
 It was the first work for DC Comics by Stan Lee, co-creator of numerous popular Marvel Comics characters, in which he reimagined several DC superheroes including Superman, Batman, Wonder Woman, Green Lantern, Aquaman, and The Flash.
 As an in-joke, Lee changes several of the civilian names of most famous DC superheroes to alliterative ones in reference to Lee's tendency to use them for his Marvel Comics characters.
Toytown is the number 2 independent toy retailer in the UK and Ireland.
 Providers of children's toys and entertainment products with 23 stores throughout the UK and Ireland.
 The independent toy retail chain was founded in Belfast in 1979.