| Ref No | WIA GC/20091 | 
| Title | Warburg, Aby to Eckardt, Felix von 03/10/1928 | 
| Writer | Warburg, Aby | 
| Place1 | Bologna, Hotel Brun | 
| Recipient | Eckardt, Felix von | 
| Date | 03/10/1928 | 
| Format | typescript, carbon copies and photocopy of another copy sent Alexander Zinn, now in Staatsarchiv Hamburg, Bestand Staatliche Pressestelle | 
| Contents | acknowledges receipt of the article on the Planetarium, published on 28/09/1928; requests that the whole matter is treated confidentially and that any further discussions of it in public has to be checked by KBW; clarifies that there was no mention of a gift of the library at any time, only of a gift of large photographs of images showing the development of phantasy-based orientation towards space to mathematics-based orientation; it is a collection of photographs, teaching aids for adult education; explains the shortcomings of Planetariums, if they are not complemented by a documentation of images showing the development of orientation; the Water Tower in Stadtpark is a very practical venue, from its top one can look down on the North German plain; the Water Tower has the dignity of a 'Lynceus tower';copy of the letter, forwarded by Warburg to Saxl, in Warburg/Saxl file | 
	  		  
                                     Show related Persons records.
                                
Persons
| Code | PersonName | Dates | 
| DS/UK/716 | Saxl; Fritz (08/01/1890-22/03/1948); Prof. Dr. phil. | 08/01/1890-22/03/1948 | 
| DS/UK/1469 | Eckardt; Felix von (1866-1936) | 1866-1936 | 
| DS/UK/2016 | Grand Hotel Brun |  |