Dave Frieder sees a connection between two of his passions: The bridges that tie the city to the rest of the world, and Erector Sets.
The connection is Othmar H. Ammann. He designed some of the bridges and, according to Mr. Frieder, also loved Erector Sets, with their prefabricated parts â" which, to a Jersey-bound commuter at the end of a difficult day, look like careful little copies of the box beams on the George Washington Bridge that cannot go by soon enough.
âIs it coincidence or deliberateâ asked Mr. Frieder, a photographer who is assembling a coffee-table book about the bridges in and around New York and who also collects Erector Sets. Just as he knows exactly when Ammannâs bridges opened â" the Bayonne Bridge and the George Washington Bridge in 1931, the Triborough Bridge (now the Robert F. Kennedy Bridge) in 1936, the Bronx-Whitestone Bridge in 1939, the Throgs Neck Bridge in 1961, and the Verrazano-Narrows Bridge in 1964 â" he knows that 2013 is the 100th anniversary of when Erector Sets went on sale.
Erector Sets were the invention of a commuter, Alfred Carlton Gilbert, who had started a company that manufactured props for magicians. The non-hocus-pocus inspiration struck in 1912. âGilbert was traveling into New York when they were electrifyingâ the New York, New Haven and Hartford Railroad, said William Brown, an expert on Gilbert in Hamden, Conn.
Gilbert looked out the window and saw workers riveting the steel beams of a power-line tower. âHe saw the girders in the tower,â Mr. Brown said, âand that was that.â
Gilbert switched from making magic to making metal parts â" little girders, little wheels for pulleys, little gears, little engines â" and big money. By the early 1950s, his company had sales of $20 million a year. But it went out of business within five years of Gilbertâs death in 1961.
Gilbertâs family sold 51 percent of their stock to the company behind the television series âLassie,â among other programs. Some Erector Set fans see irony in that transaction, because it was television that undercut Gilbert.
âHeâs a perfect documentation of pre-television America,â Mr. Brown said. âThere are only two epics in American toys. His goes from 1913 to 1954, when you see declines. And the face of that decline is Walt Disney. In 1954, he starts to put documentaries on TV. The Erector Set is a toy you canât play with while watching TV. With Disney in 1954, peopleâs attention span was divided by television time, and the place where you put the Erector Sets became a television room. And there just wasnât space for both.â
Mr. Frieder, 59, had an Erector Set when he was a boy, much the way later generations have had Legos. He said he never cared for Legos. âI have always preferred steel,â he said, echoing other Erector Set fans.
âVeterans of the Erector generation find a vague incompleteness in the ease and precision of Lego construction,â Mr. Brown wrote on Web site of the Eli Whitney Museum, of which he is the director. âNothing in Lego matches the test of the Ferris wheelâs improbable rim, which was constructed of 13 rather than the logical 12 segments. Gilbert the magician seemed to want to be sure you were watching very closely. The bolder the challenge to be mastered, the sweeter the satisfaction.â
Mr. Frieder spent eight years, from 1993 to 2001, taking photos of the bridges around New York. He climbed and photographed all of Ammannâs bridges (except for the âtruss bridgeâ over Randalls Island that is part of the Robert F. Kennedy span). And then he met Ammannâs daughter, Margaret Ammann Durrer.
âI started telling her I was collecting Erector Sets,â he recalled. âShe said, âOh, my father used an Erector Set in designing the G.W.B.â I said: âYouâre kidding me. Reallyâ She said, âYes, he used some Erector Sets as an aid in designing the G.W.B.ââ
Mr. Frieder has amassed 15 Erector Sets, including one from 1915, when Gilbert had been in the Erector Set business for only two years. âSome of the girders look like some of the box beams used in the G.W.B., the angle pieces that are called lacing bars,â Mr. Frieder said. âThey look like the ones in the older sets. Theyâre an inch wide. The ones in the newer sets look different, and theyâre only half an inch.â
The Web has made it easier for collectors to buy and sell old Erector Sets â" eBay had more than 2,500 listings on Monday, many for less than $50 â" and Mr. Frieder said he also has the largest Erector set that Gilbertâs company issued in the 1950s. âIt builds a robot, it builds a Ferris wheel, it builds the parachute jump,â he said. âIn 2006 and 2007, I climbed and photographed the Coney Island parachute jump. Well, A.C. Gilbert made a model of that jump.â
Mr. Frieder also has an Erector Set from 1942 that was apparently never used. It will stay that way.
âI donât build with the Erector Sets,â Mr. Frieder said. âI only collect.â