In NLRB v. River Togs, Inc. (2d Cir. July 27, 1967) 382 F.2d 198, however, we recognized some of the limitations of the authorization card procedure, calling for scrutiny of the manner of execution of the cards.
In NLRB v. Sinclair Co., 397 F.2d 157, 161 (1st Cir. 1968), one of the three consolidated cases disposed of in the Gissel opinion, the Court of Appeals said, "Whether an employer has used language that is coercive in its effect is a question essentially for the specialized experience of the Board."