
    No. 91-261.
    No. 91-274.
    No. 91-321.
    Building & Construction Trades Council of the Metropolitan District v. Associated Builders & Contractors of Massachusetts/Rhode Island, Inc., et al. Massachusetts Water Resources Authority et al. v. Associated Builders & Contractors of Massachusetts/Rhode Island, Inc., et al. Itel Containers International Corp. v. Huddleston, Commissioner of Revenue of Tennessee.
   C. A. 1st Cir.;

C. A. 1st Cir.; and

Sup. Ct. Tenn. The Solicitor General is invited to file briefs in these cases expressing the views of the United States.  