Hi Roberto,
I hope you will get some tips, but it sounds like you want us to do all the work, providing you with lists per decade of what to play. Lot of this info can be gleamed from several good websites featuring best (dance) hits per decade. So that’s a good place to start.
Another one is looking at online record stores (like amazon) and look for compilation albums of the era’s you are looking at. The track lists should provide you with a few ideas.
There has been a recent post on here about older music (early 1900s) with some good suggestions, might want to search for that and read it.
Part of what makes a DJ is doing the research into this stuff. If I have a themed event, I will spend up to a day digging through the internet and finding and listening to stuff.
So, while I could give you a million idea’s and am more than willing to help people out, I have no intention of spending a few hours collecting all those idea’s and listing them chronologically for you (or anyone else for that matter). It would make moderating this forum a full time job and I’d be doing someone else’s work.
My final suggestion is to narrow your question down, Let’s say you find it hardest (after doing some research of your own) to complete your playlist for the period 1910-1930. Then you can ask for SOME artist names or tracks and genres that were popular in that period and people will most likely be more inclined to give you a tip or two, perhaps help point you in the right direction with a website to visit or something. In short, the more concrete and specific your question, the better your chances of getting some useful tips.
Good luck with your research!