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I was trying to run some notebook I downloaded from MathWorld, but lots of them need

<< MathWorld`Curves`

I tried to google it , only to find this, but the link links to nothing but a blank page. so where do I find these packages?

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I never heard of it. Could you please specify which notebook was it you've downloaded from MathWorld and required the package? – István Zachar Mar 8 '14 at 8:38
like this – tintin Mar 8 '14 at 8:40
Thanks. I guess it must be part of the list of server-side packages, like "Utilities`LiveGraphics3D`" in e.g. Slinky.nb. Best would be to write directly to Eric Weisstein, the maintainer of the site. If you do so and he replies, be sure to add an answer here! – István Zachar Mar 8 '14 at 8:47
They were there 6 months ago, I'd venture lost in the shuffle. Ping support and let them know. – ciao Mar 8 '14 at 9:08

I don't know why the supporting packages were (accidentally?) removed from but you can still find a copy of the latest revision (2007-10-10) in the Wayback Machine archive:

Eric Weisstein's Utility Package (revision 2008-05-19) may be found at

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How did you find the library in I am having a similar problem here with OrientedGraphs. – hhh Jun 1 at 19:43
@hhh I cannot recall with certainty but I probably found an copy of, and within it found the package link. I am incredulous that Wolfram really means to have taken down these packages yet I cannot find a current source. Disturbingly the Notebook is, as you note, only updated for Mathematica 6. It is almost as if Mathworld is becoming a deprecated resource. :-( I suggest you edit your question to make it especially clear that although the v6 Packages are available at the link in the answer above they are not fully compatible with v10. I will reopen. – Mr.Wizard Jun 1 at 22:35

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