Replacement, New & Antique Silver / Flatware (information for silverware sales, comparative pricing)

http://www.silversuperstore.com/gorham/home.html

http://www.silverqueen.com/

Scientific Instruments

http://www.scientiques.com

http://search.tias.com/cgi-bin/curioscape/search.fcgi/browse/price/Scientific_Instruments.Microscopes/1/

Military Antiques, Museums Etc.

National Army Museum Chelsea

http://www.national-army-museum.ac.uk/

Links to UK Regimental Museums and Collections, this site lists museums by regions and also provides valuable information for genealogical research.

http://www.armymuseums.org.uk/

Bovington Tank Museum

http://www.tankmuseum.co.uk

Antique and Reproduction Cannon (commercial site)

http://bronzecannon.com/

National Parks Service

Revolution, 1812, Civil War ……. Not just Battlefield sites, but also artifacts, collections and museums:

Archeology

http://www.cr.nps.gov/archeology.htm

Battle field Publications (some online free)

http://www2.cr.nps.gov/abpp/batpubs.htm

Building Preservation

http://www2.cr.nps.gov/tps/briefs/presbhom.htm

Smithsonian

http://www.civilwar.si.edu/smithsonian.html

US Army Center for Military History

http://www.army.mil/cmh/

US Army Museums (including comprehensive online exhibits)

http://www.army.mil/cmh-pg/Museums/museums.htm

US Medals

http://usmilitary.about.com/library/milinfo/armedal/blarmedal.htm 

Police and Fire

NYPD

http://www.nycpolicemuseum.org

Fire museum network (US and Worldwide list)

http://www.firemuseumnetwork.org/directory/webdir.html

NYC Fire Museum

http://www.nycfiremuseum.org/

Stamps and Coins

Royal Mint

http://www.royalmint.com/

Stanley Gibbons

http://www.stanleygibbons.com/

US Mint

http://www.usmint.gov/

Angels and Demons (Buying and Selling Experience)