two of mellander's books were highlighted: "gustavo a. mellander, wrote two books which are considered essential for the study of the early diplomatic relations between panama and the united states: charles edward magoon: the panama years (río piedras, pr: editorial plaza mayor, 1999)and the united states in panamanian politics: the intriguing formative years (danville, il: interstate printers and publishers, 1971)." (see: https://www.loc.gov/rr/hispanic/pdf/panama%20guide.pdf)