The West Otago Vintage Museum is set to expand even further.
Life member of the West Otago Vintage Museum Charlie Davis (76), of Tapanui, said boosting the size of the collection at the museum had never been the problem - keeping up with housing it all was the real issue.
The collection began as a vintage machinery club in 1958.
''It's grown ever since,'' Mr Davis said.
''We got offered so much. What was happening, in the early '50s, Scrap Iron Jack was coming around and getting all this stuff that was just junk.
''We hopped in and said to him: `Hey, if you see anything good, let us know'.''
A collection of 40, mostly privately owned, vintage tractors from 1916 to the 1950s is the centrepiece of a collection that includes a steam engine, a traction engine, children's toys, clothing, household goods and newspapers and photographs of West Otago's past.
The current museum was opened in 1985, and it was expanded in 1997.
The museum expanded again and storage across the street was built in 2005.
That site was being doubled in size this year to house donations that had yet to make it to the museum, Mr Davis said.
Pouring the concrete would start this week and in the next five weeks, the extension would be complete.
''You might have something in your shed that you want to come to the museum, we've got a whole lot of stuff to collect,'' he offered.
The museum has a membership of 90, but a core group of 15 to 20 active members.
While many of the tractors still operated, some of the vintage ones were too valuable to put at risk, Mr Davis said.
''If we start using them and something goes [breaks], where do we get parts?''
