found: Plan von Berlin ... 1895:on map (Julius Straube; Jul. Straube)
found: Tooley's dictionary of mapmakers, 2004volume 4, page 255 (Straube, Julius; Berlin cartographer, engraver and publisher)
found: OCLC, Aug. 8, 2007(hdg.: Straube, Julian; Straube, Jul. (Julius); Straube, Julius; usage: Jul. Straube; J. Straube)
found: Landesarchiv Berlin. Die Pläne mit der Berolina: kartografische Exkursionen mit Julius Straube, 2014:back cover (Straube, Julius, born 1832, died 1913; was the most important cartographer and publisher of official maps for the Berlin magistrate in the late 19th and early 20th centuries)
found: German-language Wikipedia, accessed June 1, 2023(Straube, Julius; born April 12,1832 in Berlin; died October 24, 1913 in Berlin; at age 15 apprenticed as military cartographer and engraver under the direction of Daniel Gottlob Reyman; cartographer and map publisher; founder and owner of Geographisches Instituts und Landkartenverlag Julius Straube, 1858-1886; his most important publishing project was his monumental Overview plan of Berlin (44 sheets), issued in 1885) - https://de.wikipedia.org/wiki/Julius_Straube