While conducting repairs on a home in Amsterdam, an electrician discovered inside a crawl space a suitcase wrapped in newspaper containing visa applications to the U.S. that Holocaust victims filled out 76 years ago.

The electrician, Guus Braam, and the owner of the home gave the objects to the Jewish Historical Museum in Amsterdam because he thought it “must have something to do with the war,” Braam told the Het Parool daily, which published an article on the find Sunday.

Researchers at the museum traced the suitcase back to the Redlich family, a household of two parents and their two sons, Peter and Gunther, who fled Hamburg in 1938 for Amsterdam. The Redlichs, who owned a raincoat factory, all perished in the Holocaust.

The suitcase found on Stadionkade Street in southern Amsterdam contained money, Peter’s high school report card, his picture, a notice of his death at the age of 19 in a concentration camp in Austria, and visa applications for his parents and brother, among other objects. The report did not say whether the Redlichs ever received an answer to their application.

The suitcase and its contents will go on display on April 20 at the Jewish Historical Museum, the report also said.

Peter was arrested during a raid in Amsterdam and sent to a concentration camp in the Netherlands and from there to the Mauthausen concentration camp in Austria. He died there, like 60 percent of the 199,404 prisoners who passed through the camp, including 38,120 Jews.

His parents were deported to the Westerbork concentration camp in 1944 and were murdered in February in Auschwitz. His brother is believed to have died several weeks later. Het Parool says the family may have been betrayed to the authorities. Approximately 75 percent of 140,000 Dutch Jews were murdered in the Holocaust – the highest death rate in Nazi-occupied Western Europe.

In addition to a notice on Peter’s death, the suitcase also contained a letter that he sent to his parents from Mauthausen soon after arriving there. “I am well and you needn’t worry about me,” the letter read. The factory where Peter was employed, Asscher Interieurs, sent the family three months’ worth of Peter’s salary in commemmoration of their son, documents in the suitcase also show.

In Peter’s school report card, a teacher wrote: “We know him to be a studious pupil who fulfilled his scholastic duties fastidiously.”

In a ledger found in the suitcase, Peter for years noted down his expenses and income from after school work and allowance. A sailing enthusiast, he bought a small boat which he paid in installments. He also noted down his expenses on a book on sailing, movie tickets, a sports shirt and gifts he bought his mother and father: A pencil for his “Mutti” and a cigarette lighter for his “Vati,” as he called them in the ledger.

“It turned out to be a spectacular find,” Peter Buijs, a researcher for the Jewish museum, said of the suitcase. “These documents make up a picture of the tragedy that happened to this family. It gives Peter Redlich a face.”

The owner of the home where the suitcase was found, Marianne Eleveld-Lasès, auctioned off several coins that were found in the suitcase but decided to donate the rest to the museum, Het Parool reported.