Origin of the American phrase getting down to brass tacks

Q: When people prepare to discuss serious business, they often say they’re “getting down to brass tacks.” Why tacks? Why brass?

Get Down to Brass Tacks What Does this Helpful Idiom Mean? • 7ESL

Common Idioms and Phrases: Meanings and Origins - Owlcation

What is the origin of the phrase 'getting down to brass tacks'? What exactly is the phrase meant to convey? - Quora

The saying 'Get down to brass tacks' - meaning and origin.

A thread about the phrase “let's get down to brass tacks.” : r/MurderedByWords

a hypothesis as to the origin of 'to get down to brass tacks

This Is Why People Say Brass Tacks — Best Life

Read the Supreme Court Decision - The New York Times

GET DOWN TO BRASS TACKS definition

[Fineman, Howard] on . *FREE* shipping on qualifying offers. The Thirteen American Arguments: Enduring Debates That Define and Inspire

The Thirteen American Arguments: Enduring Debates That Define and Inspire Our Country

Hundreds of American phrases and Sayings explained

Let's Get Down to Business: Definition, Origin with Useful Examples - English Study Online