Dear Jan Caboun,
Thank you for posting your request on History Hub!
The file III a (562): Cheb/ Oberschon, Czechoslovakia in the record series Damage Assessment Reports, 1942 - 1945 in the Records of the U.S. Strategic Bombing Survey (Record Group 243). Under normal circumstances, you would be able to view the file in the textual research room (Room 2000) at the National Archives at College Park or request a quote for a reproduction by sending an email the National Archives at College Park - Textual Reference (RDT2) at Archives2reference@nara.gov. However, as a public health precaution due to COVID-19, all National Archives research rooms nationwide, including those at Presidential Libraries, are closed to the public until further notice. Also, the National Archives and Records Administration (NARA) has suspended reproduction and digitization services until further notice due to COVID-19. Please check NARA’s web page about COVID-19 updates for the latest information. We apologize for this inconvenience and appreciate your understanding and patience.
We hope this is helpful. Best of luck with your research!