SULLIVAN BROTHERS PRINTERS, INC., PETITIONER, v. NATIONAL LABOR RELATIONS BOARD, RESPONDENT. LOCAL 600M, GRAPHIC COMMUNICATION INTERNATIONAL UNION, AFL-CIO, CLC, PETITIONERS, v. NATIONAL LABOR RELATIONS BOARD, RESPONDENT. SULLIVAN BROTHERS PRINTERS, INC., INTERVENOR. Nos. 95-1733, No. 96-1098.United States Court of Appeals, First Circuit.Heard June 7, 1996 November 5, 1996 Page 1218 [EDITORS’ NOTE: THIS PAGE CONTAINS HEADNOTES. […]