Various links

This is a collection of various links that might be useful and interesting, in my opinion, to all visitors of my site.
— ilovepdf.com — a free pdf files working online.
— archive.org — this is the Museum of WEB: genial!
— radiomuseum.org — the virtual Museum of radios.
— accuweather.com — it is the best web-site about weather.
— passportindex.org — is a site that allows you, among other things, to check which states you can visit with your passport without having to apply for a visa.
— seatguru.com — with the help of this site you can choose the most comfortable seat among those available on any plane in the world (and it is very easy to use).