Favorite this☆ 1964 Thunderbird Jr. specifications, Powercar Company Description: Specifications for the 1964 Thunderbird Jr. miniature automobile, both the children's model and adult fun car, manufactured by the Powercar Co. of Mystic, Connecticut. Details Resource ID: na050040 Subject: Powercar Company Thunderbird automobile Automobiles--Models Trade literature Date Issued: 1964 Format: 1 sheet : col. ; 8.5 in. Member of: National Automotive History Collection Filing Location: Vertical file, Miniature cars Rights: Physical rights are retained by DPL. Copyright is retained in accordance with U.S. copyright laws.