this cleverly designed mid-century set of nesting tables designed by Bertha Schaefer (American 1895-1971) for M. Singer & Sons with rectangular case table fitted on the underside with 4 round drop-leaf slide-in collapsible tables suspended from slots; with label 'M. Singer & Sons, New York  Chicago'; In 1924 Schaefer founded Bertha Schaefer Interiors. Her company designed Bauhaus-inspired furniture and interiors for both residences and businesses.