I haven't heard that album. Joe Hill wrote a song, which can be found in the IWW Songbook SONGS TO FAN THE FLAMES OF DISCONTENT called POWER IN THE UNION;

There is Power(there is power) In a band of working folk When they stand, hand in hand, That's a power(that's a power) That will rule in every land One Industrial Union Grand.

Actually it's to an old Baptist hymn THERE IS POWER IN THE BLOOD.

Mark Ross