70's concert t shirts

[dontlookdown]

I have a teenage nephew who's really into 70's concert t shirts - but they have to be cheesy 70's bands so FM doesn't apply.

Anyone know where I can find Boston, Kansas, or Jefferson Starship (not Airplane) t shirts? They have to be real vintage shirts.

Bands that are still respected in 2003 don't count.

Thanks

[HomerMcvie]

I've got a couple Hall and Oates tees!