Baseball Cards, 1887-1914.
From the Library of Congress American Memory Project, an online exhibit of over 2,000 trading cards. Search by keyword, player, team, league, city, or card set.

Coin Collecting.

Curioscape.
Antiquing and collecting links on the net. Includes everything from art, books, antiques, coins, china, dolls, jewelry, memorabilia, militaria, stamps, and toys to transportation and machinery.

Sewing.

Stamp Collecting.

Verses for Cards.
At a loss for words? Need a verse or a line for a get well card, sympathy card, birthday, retirement, engagement, wedding, or divorce card? This site has free lines, verses, and poetry to help create your own cards.