Application for such license shall be made in writing stating full name, age, residence, length of time he has resided in the city, whether a citizen of the United States, whether he has been convicted of felony or misdemeanor, whether he has been previously licensed as a driver, and if so when and where, whether his license has ever been revoked or suspended and for what cause, which statement shall be signed and sworn to by the applicant and filed with the city clerk as a permanent record.