The coolest part about Adventure is that 1925 has come, gone... and been documented. Here are some websites that talk about people or events of the 1925 era. The last three sites are great for anyone looking to use Dr. Zorbo... they're all about airships. Make sure you see the pictures of the interior.

http://www.artchive.com/1925/1925.html
http://xroads.virginia.edu/~UG97/inherit/1925home.html
http://memory.loc.gov/ammem/aap/timelin3.html
http://www.crh.noaa.gov/pah/1925/fha_frame.html
http://www.crh.noaa.gov/pah/1925/p_frame.html
http://www.nobel.se/physics/laureates/1925/
http://www.nobel.se/literature/laureates/1925/
http://etext.lib.virginia.edu/harlem/
http://www.aht.ndirect.co.uk/airships/interior/index.html
http://www.aht.ndirect.co.uk/airships/interior/R100Interior.htm
http://www.aht.ndirect.co.uk/index.html