The book is largely out of print but remains accessible through several channels: Libraries: Available for digital loan via the Internet Archive Open Library Used Market:
Cassell’s work focuses on circuits composed of linear elements—resistors, capacitors, and inductors—where the output is directly proportional to the input. This textbook was designed to bridge the gap between basic physics and advanced network theory for electrical engineering students. Wallace L. Cassell. Publisher: John Wiley & Sons, Inc.. First Publication: December 1, 1964. linear electric circuit by cassell pdf
Linear electric circuits : Cassell, Wallace L - Internet Archive The book is largely out of print but