Martin Schwartz

1923

• Commercial radio operator theory course
• Amateur radio theory course
• "Ameco" extra class radio amateur license guide
• Amateur radio novice class theory course
• General class radio amateur license guide
• Novice class radio amateur FCC test manual
• "Ameco" radio amateur extra class license guide
• Advanced class radio amateur FCC test manual
• Advanced class radio amateur license guide
• Ameco advanced class radio amateur license guide
• Commercial radio operator's license guide
• Extra class radio amateur FCC test manual