Hi Helen,
You said the burials took place between 1930 - 1960.
Can I offer a suggestion?
The local Cemetery Records Office will have details of each person(s) buried in each lair/plot.
I know it would probably mean a lot more work for you but why not photograph each stone as it stands and at the same time, transcribe as much of the inscriptions as you can make out, make a list/plan of each grave, if possible including each lair number (if there are markers).
Contact the Records Office, tell them what you're doing and hopefully, (depending on how helpful/busy they are) they'll tell you who's buried where. Some Cemetery Records Offices will allow you to browse through the lair records but others don't have the space.
As I said, doing it this way may take up a lot more time than you anticipated but in the long run, you won't upset anybody. You'll also have exact dates for each burial, relationships of those interred in the same plot/lair and a really comprehensive and detailed project at the end. Even if a stone is completely eroded and there's nothing left to read, take a photo of it, you never know, someone somewhere might be searching for a picture of "Section X, Lair Y in Cemetery Z as they'll already know whose buried in it.
I know how frustrating it is not being able to read the stones. I've been photograhing and transcribing a lot of the old churchyards and cemeteries in Stirlingshire for the past couple of years and sometimes I've had to go back half a dozen times to a stone and by using the angle of the sun and the shadows cast at varying times of the day, the results can be amazing. Obviously in winter we're lucky to get any sunshine at all some days but even this has it's advantages, I've had some great results from stones having a touch of frost on them.
All in all, I think the more cemeteries photographed now will be an invaluable resource in the future but not at the sake of causing any more deterioration than is already happening.
In other words, go for it girl!
Anne
Anne