Related Clues:

• Matrimony
• America's is more perfect
• Labor group
• Word that can precede the start of 17-, 23-, 52- and 63-Across
• See 26 Across
• Civil War victors
• Square in Manhattan
• Bull Run side
• Strike group
• One side in labor negotiations
• Confederation
• Baseball players have one
• Pairing
• ACLU part
• Teamsters, e.g.