First open the desired copy, I choose M. H. Shakir, The Holy Quran; Arabic Text and English Translation; Foot-notes by M. H. Shakir (1974). Right click in the first page image and select “copy link address”. You should get something like this: https://quran.sfo2.digitaloceanspaces.com/m-h-shakir-1974/m-h-shakir-0001.jpeg
The idea basically is to enumerate through the files by the number. The maximum number