I didn't know people collected holy cards like beer cans, but they do. The LA Times this morning ran a pretty good article about it. The woman featured in the article has over 40,000 cards. Excerpt:
Her obsession is shared by a small, eclectic group of collectors spread across the country, including such places as New York, Ohio, Texas and points west. As children amass baseball and Pokemon cards, these people – priests, teachers, housewives and academics – seek the prayer cards.
They scour EBay and antique stores, religious relic shops and flea markets in France, Italy and Switzerland in hopes of fresh finds.
"They renew my spirit when I look at them," said Mildred Lee Bozeman, a collector in Wichita Falls, Texas. "They increase my joy in my God and faith."