I have been looking old school vintage design alot lately. I guess i am trying to find something that pushes me to design something new. When i look through my inspiration images folder i always see the work of Paul Rand.
Rand designed some pretty freaking cool stuff, but his most famous would have to be the IBM logo design and then their product work. Still used today, the IBM logo was first designed in 1956 then the striped logo came into play in 1972. Still looks pretty cool to me.
Paul Rands website