I have several images of records from the border area of Ilok, Croatia, and Ljuba, Serbia, where the Handlers lived for a good part of the 19th century and early 20th century and I have only shared a few:
Josef Handler's 1884 birth record is at Use JewishGen Family Finder.
Adolf (Aron) Handler's 1900 death record is at Adolf Handler's Death Record.
Adolf's and Sali's 1882 marriage record is at Wedding Wednesday ~ Adolf Handler and Sali Handler, 1882.
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Two and a half years ago, when I shared the transcriptions or index of birth records for my husband's grandfather, Josef Handler, I only saw transcriptions for Rose (Rosi, born 1883), Joseph (Josef, born 1884), and Sam (Salomon, born 1887). I wondered why their younger sister, Regina, born in 1891, didn't appear. The suggestions in the comments were great, but it turned out that her birth was recorded in Ilok, not in Erdevik, and it doesn't appear in the JewishGen Hungarian Database, but I found it in one of the digital images that was sent to me.