In both the United States and England, the market for comic valentines rivaled that for sentimental valentines, with their sales numbers about equal in the 1840s and 1850s. Sentimental valentines were more expensive, ranging in price from twenty-five cents to thirty dollars. A single comic valentine cost about a penny, hence their other nickname "penny dreadfuls." "Dreadful" is an appropriate term, but "crude," both in content and printing, is perhaps more accurate. Many were printed from wood blocks, with the color added by hand (often with stencils). The later examples were reproduced lithographically, but imitated the look of woodcuts. Sometimes the same image was used more than once with different doggerel verse. The recipients typically threw them away, so few survive. Bibliographically, they are challenging because they rarely list the artists' or publishers' names or the date of publication. The illustration technique is not always obvious, even with magnification. Working under the NEH-funded McAllister Project, Linda Wisniewski scanned the valentines. During a 2006 internship funded by the Fels Foundation, Elizabeth Donaldson created the records for the collection. Thanks to Linda and Betsy, digital versions of these remarkable pieces of ephemera are available here for further study.