It also publishes chapbooks, trade hardcovers, and a few paperbacks. The series is collected into trade paperbacks and deluxe hardcovers. The series has been released in trade paperbacks (TPB) and "Deluxe Edition" hardcovers (HC). The series has been compiled in six trade paperbacks and three hardcovers. "The Umbrella Academy" is collected in trade paperbacks and limited edition hardcovers. This series has been collected in the following trade paperbacks and hardcovers. The "Injustice 2" series is collected in several trade paperbacks and hardcovers. The "Action Comics" series is included in a number of trade paperbacks and hardcovers. Many Seal Books were originally published as Doubleday hardcovers. Deluxe edition hardcovers are also being produced. Best Sellers list for nonfiction hardcovers at No. 1. In 1990, Picador started publishing its own hardcovers. In addition, several hardcovers collect edited versions of the series tales. Rucka and Lark take the extra content in them "very seriously" because hardcovers are expensive. The bark is softened in rice water, folded and secured between the two hardcovers.