My Inventive Pal. Sheet music for piano and voice, titled "My Inventive Pal.", appearing as one bifold folio sheet (4 pages total). The front cover depicts Herbert Campbell dressed in brown trousers, a brown waistcoat, a red scarf, a white suit jacket and a small black cap. He is standing with one hand in his pocket and one pointing backwards. To the top right is an illustration of a man lying in bed, smoking a pipe and holding a cup. Underneath this is an illustration of a little girl holding a crying baby, and a little boy facing the other way. 1897