Before you start keep my earlier post about the equivalent transistors handy unless you are a "purist" and want to build the rigs on original parts from ebay.com.
I found those circuits simple efficient clearly by handling the regeneration in different ways.
As if the main focus was is to use less components still it is modern in depending on LM386 instead of output transformers for audio. You can refer to Sir Douglas for the old-fashioned receivers. Still those receivers are different in less dependance on transformers as feedback way to get the regeneration or the reflex.
This also a great archive of the Russian old receivers