Born in Budapest in 1937, Chayim Herzl remembers being taken by his mother Eugenia to visit his father Reuven Salgo at a labor camp outside the city in 1943.

“My hand was small, and I was able to pass some food to him through the fence. That was the last time I saw him,” said Herzl.

He lost his mother in early 1945 when men from Hungary’s Arrow Cross took her from their safe house outside the ghetto, organized by diplomat Raoul Wallenberg, while he hid under the bed.

Get The Times of Israel's Daily Edition by email and never miss our top stories Free Sign Up

Having lost his father at age six and mother at eight, Herzl has only fleeting memories of his parents. Now, thanks to a comprehensive decade-long project to collect names of Hungarian Holocaust victims, completed in a collaboration between Israel’s Holocaust Memorial Museum Yad Vashem and funded by the Fondation pour la Mémoire de la Shoah, Herzl has regained something he calls, “indescribably priceless” — information.

Through the project, Herzl learned that his father died just days before the end of the war in a POW death march, after having been forced into a labor corps in the Hungarian army fighting on the Eastern front. Beyond that, he now has a document with his father’s signature. The signature, his father’s orthographic fingerprint, is the only piece of his father’s writing Herzl owns.

“Through the efforts of Yad Vashem’s Names Collection project in Hungary, I was finally able to find a sense of closure in knowing what happened to my father. Finding a document containing his signature is evidence to the world that my father lived and a testimony to the tragic fate that befell him and so many Hungarian Jews,” said Herzl.

“The job is not yet complete: My mother, from the day she was taken from me, has vanished from the face of the earth and remains among the undocumented. I know that Yad Vashem is committed to leaving no stone unturned in the effort to identify as many Holocaust victims as possible,” Herzl told The Times of Israel.

Ten years ago, approximately 40 percent of Hungarian victims were identified after the advances made by Holocaust historian and Holocaust survivor Serge Klarsfeld. Klarsfeld in the 1980s launched the Nevek Project, gathering names from lists of prisoners of forced labor and concentration camps during WWII. Due to funding and bureaucratic issues, he abandoned his project.

Building on Klarsfeld’s Nevek Project, Yad Vashem-trained historians have added some 225,000 victims’ names over the past 10 years of intensive research. This major project was funded by the Fondation pour la Mémoire de la Shoah and supported by the late French politician and Holocaust survivor Simone Veil, who served as its first president. On Thursday, Yad Vashem hosted an event that included a special tribute to Veil.

“Simone Veil saw special importance in the collection of names of Hungarian Jews. She witnessed firsthand the arrival and extermination of Hungary’s Jews at Auschwitz-Birkenau. It was important to her that their identities be memorialized and therefore decided to support this important initiative,” said Yad Vashem Chairman Avner Shalev.

But the scope of Yad Vashem’s Names Collection project goes well beyond identifying Jewish Hungarian victims. It is, to date, the largest project Yad Vashem has undertaken and represents a holistic approach to collecting information and documents that far surpasses previous efforts.

“This is the most successful project that Yad Vashem’s Archives has undertaken. The holistic approach of the project has become a model for other endeavors we are currently promoting in the name-gathering process, in particular the Polish Names Project, and we hope that with the continued support of the French Foundation we will achieve similar results to those we obtained in collecting names of Jewish victims from Hungary,” said Shalev.

In addition to Poland, which has signed a cooperation agreement with the institution, Yad Vashem is implementing the information-gathering model it founded in Hungary to its names recovery efforts in the territories of the former Soviet Union and the Balkan States.

In conversation with The Times of Israel Thursday, Dr. Alexander Avram, director of the Hall of Names and the Central Database of Shoah Victims’ Names, explained the project’s procedures and resonance.

Unlike the initial goals of the Nevek Project of attaching a name to every victim, the Yad Vashem project “has revealed part of their individual stories, and in some cases, for the first time was able to connect a rare photograph with the name of the faceless murdered,” said Avram.

The intensive work began in 2007 and was conducted under the leadership of three Yad Vashem historians who trained a staff of some 20 researchers who were on-the-ground in Greater Hungary: Hungary, Slovakia, parts of Romania, Serbia, and Transylvania. Through special diplomatic agreements forged with the Hungarian government in 2005 and 2006, said Avram, the researchers were granted full access to all state archives for this specific project.

“It is not easy in these countries to find documentation about the Holocaust and Jews,” said Avram. “They are no key words for catalogues; there is no archive in Europe that has a topic ‘Holocaust’ and catalogues for this or for Jews.”

The team pored over archive material from all sorts of offices — including the Ministries of the Interior, Defense and Agriculture — “page by page, to map those documents important to Jews and the Holocaust,” he said. The important pages were scanned and sent to Yad Vashem, which is in the process of uploading the pages into its database.

The team, trained by Yad Vashem, must be fluent in Hungarian, and have skills in German, Romanian, Serbian and other languages of the region to decipher the handwriting of the pre-World War II documents.

In December, the intensive research collection is finishing, but the team will continue to decipher documents to add more names and stories into the database.

“In our database we have 4,700,000 names of Jews murdered in the Holocaust. That means that more than 1 million who are not identified,” said Avram. Whereas in central and western Europe some 95% of the victims documented as Jews were arrested, sent to transit camps, and then on to death camps, in eastern Europe there is less of a paper trail.

Although he said the teams of researchers at Yad Vashem will continue to document victims, it is important to note, said Avram, that the teams have “exhausted most of the easy sources, and now look for names scattered in less unexplored sources where they will sometimes read a book of 500 pages to reach four or five names.”

“We are focusing our efforts in the countries where we have a more significant gap in names of victims,” said Avram. In Hungary, for example, although there were organized transports, “nobody cared to register the names of the Jews on the transports,” he said.

Like the case for Herzl, who discovered his father’s fate through the Yad Vashem project, Avram hopes to find more than mere monikers for the remainder of the victims.

“We can sometimes build a personal story. Previous attempts were to document names of victims; in this project we are trying to go further than that,” he said, and transform the name into a person.