Susan B. Anthony and Sacagawea have been on the silver dollar. Hellen Keller was on the back of one of the 50 state quarters.

Technically, that was a cupronickel dollar and a brass dollar. The last woman on the obverse of an actual silver dollar was Liberty. The first woman on a US silver dollar was Liberty. She was the only "person" on the coin from 1794 all the way to 1935. The current non-circulating silver bullion coin also features Liberty.

Eisenhower was on a cupronickel dollar from 1971 to 1978. SB Anthony was on from 1979-1981 and 1999.

The brass coins have had Sacagawea since 2000, and George Washington from 2007 to 2016.

In total, Liberty has been minted on circulated US coinage for 142 years. Eisenhower was on for 8 years. Washington was on for 10, and barely circulated at all. Anthony was on for 4 years, Sacagawea for 17.

Liberty was also on a $20 US note (greenback) from 1862 to 1863.

Clearly, the US Mint has a better history of sexual equality than either the Treasury or the Federal Reserve, the latter only ever depicting presidents, secretaries of the Treasury, and Ben Franklin.

To be fair, its not the Treasury's decision than no US Presidents were ever women.

But why are US Presidents and Benjamin Franklins on the notes, rather than just former Treasury secretaries?

Clearly, if you can choose to put someone that really has nothing to do with the issuance of fiat currency on the notes, you could put anyone on them, and anyone includes women.

...and they chose Presidents. Which, due to circumstances beyond their control, include no women.

I suppose it was also due to circumstances beyond their control that Benjamin Franklin was not a woman?

I don't really care. I find the whole business to be slightly off-putting to begin with, and this is just a reminder that other people control all the money we use. But this is the turd you step in when you choose to honor specific individuals on your notes, rather than sticking to the eidolons. By putting specific people on the money, you are implicitly saying that everyone else was not good enough to make the cut.

Putting Tubman on the $20 just seems an awful lot like Mitt Romney showing off a token black friend at a campaign event, or thumping on one of his "binders full of women". They're not fooling anyone. We know they're still hard at work, desperately trying to sell the post-2008 "recovery" that only ever seems to show up on paper, but not in paychecks. This is a sideshow--a distraction.

Can we maybe get some money without the blatant political manipulation? Crap like this is the only reason I have any interest in Bitcoin (et al.) at all. We are all simply dying to have a currency that is immune to at least one form of all the financial bullshittery that we have traditionally been subjected to.

Who is honored by cryptocoins? Satoshi, but no one knows who he really is. Doge--a meme dog. Kanye West, in what appears to be a satire of some sort, though this may be covered by Poe's Law.