Powell's Chicago is at http://www.chicagobookstores.net/
Here's a directory for you: http://www.chicagobookstores.net/
And try the Chicago Theological Seminary Co-Op Bookstore, too. http://www.semcoop.com/ -- their speciality is academic titles, but their awfully comprehensive. Same neighborhood as Powell's (Hyde Park -- south side)
If you know what you want (or are in Seattle), check out these places:
SEAOCEAN BOOK BERTH
3534 STONEWAY N 98103 0675-9020
fax: 675-9029
email: seaoceanbooks@seanet.com
TUES-SAT 11-7
MARINE, MARITIME & NAUTICAL
The ArmChair Sailor
2110 Westlake Ave. N.
Seattle, WA 98109
Phone 206/283-0858, 800/875-0852
Fax 206/285-1935
http://www.armchairsailorseattle.com/
Captain's Nautical Supply
2500 15th Avenue West
Seattle, WA 98119
Phone: 206/283-7242, 800/448-2278
Fax: 206/281-4921
http://www.captainsnautical.com/
sales@captains.yachtoutfitters.com
For a mere $3300 or so, you can have one of their handmade 3" telescopes, machined from solid brass stock:

[ 01-20-2003, 06:46 PM: Message edited by: Nicholas Carey ]
You would not enjoy Nietzsche, sir. He is fundamentally unsound. — P.G. Wodehouse (Carry On, Jeeves)