I'm looking to purchase a print. It was published in the Chicago
Tribune a few days after Sept. 11-th. It shows a chimney sweep in
Europe standing on the roof, with his hand across his heart. I believe
the caption said that he was observing the 3 minutes of silence for
the victims.

Answer is below in comment-form.

Fast answer, thank you.

Here's the picture (although his hand isn't across his heart):
http://www.latimes.com/la-091401eu,0,5536165.photogallery?index=3

Is the above an acceptable answer?

This seems to be the article that you're talking about:
http://pqasb.pqarchiver.com/chicagotribune/abstract/81904295.html?did=81904295&FMT=ABS&FMTS=FT&PMID=7684&desc=World+pauses,+mourns

Wow, Chris I'm impressed. I'm 99% sure that's it. But there's some
reason I keep thinking that he's standing on the roof not the chimney,
and he has his hand over his heart. I could be wrong of course, this
is the closest I have ever come to the photo I've been lookig for over
a year. Thank you so much.

Hi Chris, 
can you tell me how to purchase the photo? The e-mail I sent to the
photo archives came back as a wrong adress.
Thanks,
Hilda