Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 48, § 64

The district at such meeting may vote to establish a fire department, to consist of a chief engineer and as many assistant engineers, enginemen, hosemen and hook and ladder men as they may consider necessary, not exceeding seventy-five for each suction engine, thirty-five for each common engine, five for each one hundred and fifty feet of leading hose kept for use within the district, and not exceeding twenty-five hook and ladder men. Each of said officers and members shall be furnished with a certificate, signed by the chief engineer and clerk, declaring his station in the department.