272 Alvin pressure hull being machined at Hahn and Clay, Houston, Texas. Dyers dock testing floatation bags for Alvin. Early days before Alvin came to WHOI, heat treatment

272 Alvin pressure hull being machined at Hahn and Clay, Houston, Texas. Dyers dock testing floatation bags for Alvin. Early days before Alvin came to WHOI, heat treatment, DO30120005452. Woods Hole Oceanographic Institution, Data Library and Archives. http://archives.mblwhoilibrary.org:8081/repositories/2/digital_objects/1108 Accessed December 26, 2024.