Historical

The Costume Store Ltd.
Period clothing and accessories, including hard to find specialty items. Online catalogue with images, ordering information, and queries. (East Sussex, UK)
http://www.thecostumestore.co.uk

Debbie Gluck's Creative Costumes
Custom-made period, theatrical, and wedding costumes for men and women; Renaissance to 20th century. Images of past work, designer's profile, and links. (Los Angeles, California, USA)
http://www.debbiescostumes.com

Harriet's TCS
Medieval through 20th century. Online catalog of rentals and patterns for men, women, and children; custom sewing for bridal parties and events. Vintage clothing boutique, accessories, sewing kits, fabric and notions, measurement charts, FAQ, profile of the designer. (Danbury, Connecticut, USA)
http://harriets.com

Michele's Sew It Seams
Custom and ready-made garments for men and women; primarily Colonial and Old West. Online catalog with some images, designer profile, events schedule, and links. (Johnstown, Colorado, USA)
http://www.sew-it-seams.com

Military Warehouse
Provider of wholesale uniform and clothing accessories, and some hardware equipment. Focus is on American wars, specifically the American Revolution, War of 1812, and the Civil War. Online catalog with images, company history, suggested books list, and links. (Corinth, Mississippi, USA)
http://www.milwarehouse.com

Nativearth Footwear & Accessories
Handmade historical boots, shoes and sandals in styles from 4000BC to 16th century. Also offers accessories and materials.
http://www.nativearth.com/

Nehelenia Designs
Custom made gothic and vintage costumes from the European Renaissance to the Great War; movie costumes, bridal gowns. Ordering information, events schedule. (Boenen, Germany)
http://www.nehelenia.de/

Silks & Velvets: Designs by Yosa
Custom women's historical and fantasy dresses and corsets for reenactment or weddings; Renaissance, Gothic, and 18th century. Online catalog only, image gallery, available fabrics, measurement form, company history, FAQ, and mailing list. (Lawrence, Kansas, USA)
http://www.yosa.com/

Wings & Roses
Historical women's clothing including Renaissance, Regency, and Victorian eras. Also Chinese jackets and square dancing dresses. Online catalog with images and links collection. (Carson City, Nevada, USA)
http://www.wingsandroses.com