In 1920 while Gostelow was in Broken Hill, the Barrier Field Naturalists Club held a wildflower show in the technical college.
Gostelow also set out and achieved the huge task of painting all the known and recorded species of birds in Australia.
His skill and integrity were well known and respected to the extent that the Australian Museum, amongst other institutions, loaned him stuffed birds from which he worked.
His completed collection of 730 mostly life size paintings, illustrating the male and the female of each species with the flora native to their habitat also contained the museum's registration number and explanatory notes.
E. E. Gostelow died in 1944 in the Sydney suburb of Burwood before he could complete his next project of painting all of Australia's butterflies.