| 2 | www.encyclopedia.com | Electric Library |
| 2 | www.encarta.msn.com | Microsoft Encarta |
| 0 | www.eb.co.uk (or.com) | Encyclopaedia Brittanica, cut-down |
| 0 | gme.grolier.com/free | Grolier Encyclopaedia |
| 0 | www.bt-ern.co.uk/helicon | Hutchinson Online |
| http://ipl.sils.umich.edu | Internet Public Library |