Reddit mentions of I, Robot (The Robot Series)

I found the site, here are some first observations

• 12 32 35 21 24 from 0001.txt gives you a five-number sequence which could be related to your 5 x 5 grid puzzle
  
• Paul's address 80 E. 11th Street in NYC is a real address of a building called the St. Denis. Furthermore, on the outside of that building is R O L A N D ... one huge letter in each of six windows. Probably not a coincidence, it may be that ROLAND is needed somewhere in this game
  
• The telephone numbers of Jonah, Elias, Paul, and Hermann are actually ISBN-13 numbers of science fiction books by Isaac Asimov. I was looking to see if they are real phone numbers in a certain nation, then realized they are not, they are ISBN, and searching each number yields an Asimov book
  
• 0553803735 = Second Foundation (Jonah's telephone number)
  
• 0553803700 = I, Robot (Elias' telephone number)
  
• 0553803719 = Foundation (Paul's telephone number)
  
• 0553803727 = Foundation And Empire (Hermann's telephone number)