“ New York, N.H. & H.R. Co., 350 U.S. 155, 76 S.Ct. 227, 100 L.Ed. 166, we decided that a railroad could seek relief before the Board although railroads, like political subdivisions, are expressly excluded from the term 'employer' in the Act. [7] Our opinion pointed out that 'the N.L.R.B. is empowered to issue complaints whenever 'it is charged' that any person subject to the Act is engaged in any proscribed unfair labor practice,' and that Board regulations allow such a charge to be filed by 'any person' as defined in the Act, 350 U.S. at page 160, 76 S.Ct. ”

“ We see no reason to deviate from those holdings. It is also admitted that the dispute here involved is the kind over which the Labor Board normally has exclusive power. Respondents allege an attempt to force Zahn and the County to stop doing business with each other or, alternatively, to coerce Zahn into making his employees organize a union shop. Both of these allegations, if proved, would constitute unfair labor practices under § 8 (b) (4) of the National Labor Relations Act. [3] If the charges are not proved the conduct might well be 'protected' under § 7 of the Labor Act. ”

“ Co., CCH 1957-1958 Labor L.Rep. (4th ed.) 55,353.↑ Section 8 (b) (4) provides in part: 'It shall be an unfair labor practice for a labor organization or its agents * * * to engage in, or to induce or encourage the employees of any employer to engage in, a strike * * * where an object thereof is: (A) forcing or requiring * * * any employer or other person to cease using, selling, handling, transporting, or otherwise dealing in the products of any other producer, processor, or manufacturer, or to cease doing business with any other person ”