Where can I find congressional votes on old legislation?

[Chunk Yogurt for President!]

It's very difficult to find information on how many congressmen voted for or against certain pieces of legislation from the 18th or 19th century.  This is especially true for anything before 1850.

For instance, when the US voted to prohibit the slave trade in 1807, how many people voted against that?

[Chunk Yogurt for President!]

It's very difficult to find information on how many congressmen voted for or against certain pieces of legislation from the 18th or 19th century.  This is especially true for anything before 1850.

For instance, when the US voted to prohibit the slave trade in 1807, how many people voted against that?

I recall seeing who voted for and who voted against banning the slave trade in 1807 on http://govtrack.us

I can find the bill, but I can't find the information about who voted for or against it.

[Chunk Yogurt for President!]

I found the govtrack.us pages for the 1807 importation of slaves law on wikipedia (how individual senators/representatives voted is at the bottom of the webpage):

Senate: https://www.govtrack.us/congress/votes/9-1/s1

House: https://www.govtrack.us/congress/votes/9-2/h131

Thanks.  I'm surprised by how close it was.  I was expecting only a few Senators to vote against it.