Sacajawea hasn't been depicted on any 20th or 21st century US paper money, but an interpretive portrait* has of course been on Native American $1 coins issued since 2000.
(*) There are no known pictures of Sacajawea herself, so the coin's sculptor Glenna Goodacre used a Native American college student as her model for a stylized portrait.
One dollar, maybe two to a collector.
I don't believe that Thomas Jefferson ever appeared on a twenty dollar bill. Andrew Jackson has been the portrait on the US twenty dollar bill since 1928. Jefferson does appear on the two dollar bill, and has since 1918 (and also from 1869 to 1874).
Sacajawea, and the American buffalo
it is worth its face value of 1 dollar
The Sacajawea dollar first was minted in 2000.
2000 to date
4
JFK's portrait is on the half dollar. It does not appear on any US banknotes. i don't think he is i did research on it but there isn't sorry!
Believe it or not, it's worth exactly one US dollar.
One dollar, maybe two to a collector.
Sacajawea is on a one dollar US coin that was made in the 2000s.
I don't believe that Thomas Jefferson ever appeared on a twenty dollar bill. Andrew Jackson has been the portrait on the US twenty dollar bill since 1928. Jefferson does appear on the two dollar bill, and has since 1918 (and also from 1869 to 1874).
Sacajawea, and the American buffalo
The US dollar is 100 cents. The one dollar bill is the primary currency, dollar coins being greatly resisted by the public (Eisenhower dollars are large coins - Sacajawea, Susan B. Anthony, and Presidential brass dollars are too close to a quarter in size). For the value of a US dollar in other World Currencies, see the related link below.
it is worth its face value of 1 dollar
The Sacajawea dollar first was minted in 2000.
Irish people call the US Dollar bill, a dollar or a dollar bill.