Antique book?

I just found a curious book.

"Manual of the National Union" printed by the Senate 1887

Evidently there's a "committee on secret work" or something too. It's basically a How-to manual of the National Union's proceedings.

I can't find anything about it through Google or the Library of Congress. The only mention of it online is on a Freemasonry website that says an older printing was used as reference for something.

Can anyone get more info on this? I'm at a complete loss. I can't even find a "National Union" that was active in 1887.

Some of us are historian and actually know how to find books.

Manual of the National Union :
revised and reported to the senate by the committee on secret work, and adopted at the sixth annual session, at Fremont, Ohio, June 24, 1887 ; approved by President Creager, September 7, 1887.

National Union.
1887
English Book Book 62 p. : ill., music ; 19 cm.


Where to find:

Location     Library     Code
US,AL    AUBURN UNIV    AAA 
US,OH    RUTHERFORD B HAYES PRESIDENTIAL CTR    ODH 
US,OH    WESTERN RSV HIST SOC LIBR