Someone wrote me offline, and I can now supply urls for the images, which are now online. Be patient; they take about 2 minutes to load.
The first is for an index, showing where Esner records are located. This is only helpful for matching up possible dates.
http://actapublica.eu/matriky/praha/prohlizec/10134/?strana=...The second is a baptismal/birth record for Jan Esner.
http://actapublica.eu/matriky/praha/prohlizec/10126/?strana=...Many of the adjoining pages have references to Esners.