A new book by the founder of Apple's first "in-house" design contractor, frog design, brings back memorable photos of many early Apple prototypes, including a (corded) phone with an LCD display that could also send email, a stylus-driven tablet, a dual-flatscreen workstation and a MacBook portable notebook -- all designed in the early 80s. German designer Hartmut Esslinger has included many prototypes in his latest book, Design Forward.
