this question is for those suit makers in the 80's/90's

hey guys, im doing a final art project where i need to show two stages of a past object, how the current object looks, and how the object may look in the future.

i've decided to make this object a fursuit (my teacher approved it). i don't need any help on the present and future, but it's the past im struggling on. of course when i search "how were the first fursuits made" or something along those lines, i always get results of people's first fursuits (from present day XC)

if possible, i would like a description/example of how a fursuit looked/was built in the 80's, and another in the 90's (since i need 2 past stages)

thanks for any and all help uvu it means a lot.