Pearsall's earlier sofas are distinguishable by their permanent backs and walnut trimmed bases. Later on in the late 1960s and early 70s he designed plinth bases made from compressed wood and faux-fur covered bases made from pine and hard woods as well.  As times changed, Pearsall's designs changed with them. Though some materials changed over time, the quality, craftsmanship and functionality of his creations stayed the same.