historycultureeducation:Three air raid wardens wearing a new type of gas mask (Invalid Helmet Respir
historycultureeducation:Three air raid wardens wearing a new type of gas mask (Invalid Helmet Respirator - designed for the elderly and those with chest complaints), during a mock gas attack in which tear gas was released on Esher’s High Street. Esher, UK. - 5th April 1941Source: https://reddit.com/r/ColorizedHistory/comments/i5a5cr/three_air_raid_wardens_wearing_a_new_type_of_gas/ -- source link