Opinion: Truth can be lost in darkness and this institution does an admirable job of shining a light on one of the darkest periods in human history

When my late grandfather, Zigi Shipper, was convalescing in a children’s home in Germany after the war, he was surprised to receive a letter with a British postmark.

The correspondence was from a woman who had found his name on a Red Cross list and believed she was his mother, something he could confirm if he checked for a burn mark on his left wrist.

This simple communication, black words on a white background, invited Zigi to live in England and, ultimately, changed countless lives. I couldn’t help thinking of those words on a recent visit to the Holocaust Letters exhibition at the Wiener Holocaust Library with Zigi’s daughter (or, as I prefer to think of her, “mum”), my wife and my own daughter.

It would not be hyperbolic to suggest three of the four of us would not exist were it not for that particular piece of post and it seems somehow apposite that Zigi devoted his working life to running a stationery shop in the heart of London’s West End.

The Library, the world’s oldest institution devoted to the study of the Holocaust, was founded in 1933 as an information bureau that informed Jewish communities and governments worldwide about the persecution of the Jews. These days it boasts one of the most extensive archives on the Holocaust, the Nazi era and genocide.

It hosts a collection of over a million items including published and unpublished works, press cuttings, photographs and eyewitness testimony. Truth can be lost in darkness and this institution does an admirable job of shining a light on one of the darkest periods in human history.

The exhibition exploded the myth that Jews were somehow unaware of the scale of what was happening during those years. Letter after letter hummed with urgency as Jews attempted to warn their loved ones of the true spectre stalking Europe. Postcards and letters, the most everyday items imaginable, seem gargantuan in dimension when preserved for almost a century and meaning life or death to those on either end of the communication.

Zigi received word from his mother after the war having not seen her since early childhood but, as he insisted was the case with so many of the things in his life, he was lucky. Letters sent during the years of Nazi persecution had to be euphemistic, couched in vague language to avoid censorship.

One plea written by a Dr Hedwig Leibetseder to her family from within the confines of a Lichtenburg Concentration Camp, contains more power in just a few words than many novels do in hundreds of pages: “I love you, kiss and hug you. Stay brave and healthy. Emigrate. And write.”

Fourteen words since Dr Leibetseder knew better than anyone she could not afford to be verbose. Another of her letters, written in September 1938, reads: “I am prepared to tolerate hunger and despair and everything imaginable if only I could be together with the people whom I personally love and value.”

The message concludes with a list of items the doctor wants her family to pack but is cut short by an incision in the paper where the camp authorities have excised something clearly not to their liking.

Occasionally, it is clear throughout the collection, even coded language was not enough to escape the watchful eye of the oppressor. Dr Leibetseder lived well into her 80s while Zigi died earlier this year, on his 93rd birthday.

The letters housed in the Wiener Holocaust Library tell a story of resistance and defiance in the most hopeless of circumstances but also the individual decisions that can have repercussions felt through the decades; a tale of those who lived and those who did not.

Six million is an impossible number to compute and anything that helps us understand these victims were living, breathing people with hopes and dreams has value beyond words.

• Darren Richman is a writer and journalist

To mark the 90th anniversary of the founding of the Library’s predecessor organisation in Amsterdam, the Library is staging two exciting new exhibitions, The Wiener Library at 90: Highlights From the Archives and The Wiener Family Story. Click here for more information.