Very nice book. There is no slip cover. Additional Details ------------------------------ Subject code: Subject keyword: national audubon society;tree books;sibley guide to trees;tree identification;tree book;bird book for kids;bird book for bird watching;audubon field guide;national audubon society field guide;tree identification book;trees book;tree identification field guide;trees of north america;field guide;audubon field guides;audubon books;the hidden life of trees by peter wohlleben;audubon;field guides;tree identification book north america;book of trees;smithsonian trees of north america;nature;botany