Thanks for posting. Very interesting shots of the transitional period with the UH-1D Iroquois/Huey, OH-6A Cayuse, OH-13 Sioux, CH-34C Choctaw, CH-37B Mojave and U-6A Beaver (At least these are the ones I noticed).
Would love to see some more of the CH-37 and CH-34 especially if there are any.