Casgliadau Arlein

A collection of photographs and diagrams showing operation and use of breathing apparatus, including actual rescue situations. 22 pages containing black and white photographs and diagrams that have been cut out and cellotaped onto off-white sheets of paper. Some of the pages contain notes or an appendix number handwritten in blue ink. Breathing apparatus refered to here include 'Fleuss' and 'Proto'. 88.98I/7 - 88.98I/9 were originally contained within an acidic card document folder.