[TYPO3] How can I obtain an older version of one extension?

[Livius Agrippa]

Hi,

I want to downgrade the htmlarea extension from the version 1.4.1 to 
1.3.7 or even 1.2.0. I saw that the last version of this extension is
created to work fine with Typo3 v.4 but I have created a site with Typo3 
v.3.8.

How or from where can I download an older version of this extension?

Best regards,
Livius