I have seen this room and it was sooo hard not to touch the fabric or duck under the ropes to get a closer look at the far side of the room.

The closets I would like to look in are Elton John's, I think for obvious reasons, though he has been selling off parts of it for his EJAF charity, so it would not be what it used to be.
Another one would be Michael Jackson's. He had some great costumes and hats!

After reading the comments, I grabbed issues 152 and 153 of Threads. On opening the front cover of #153, there was a full page ad entitled "The biggest Sewing Party in the United States" for the Puyallup, WA expo on March 3-6. It is on page 20 of #152. The Toronto expo is on p. 18 of #153 and p. 19 of #152.

There is an expo in Kansas City in October and one in Minneapolis in November. ASG does a one week New York fashion tour in late May or early June. They also have a National Conference that has many aspects of an expo and changes locations each year. This year it is in LA, Aug. 17-23. If you are a member of ASG, the quarterly Notions magazine advertizes all the expos too.

If the original patterns were reduced by 64% then the correct increase should be 1/.64 = 156%. However, I noticed that on my print window, the printer was reducing the page further to fit the printing on the page. That would explain the 173% enlargement scale.

To get the correct scale for whatever reduction your printer did, measure the squares then divide this into 2. Multiply by 100 to get the percent enlargement.

e.g. my medium squares printed at 1 5/32 inches (1.15625)
so 2/1.15625 = 1.73 or 173%

Adjusting the PDF display will not affect the size of the printing. It is the print window that is further reducing the size.

Having the newest Adobe Acrobat Reader is also critical. Those of us who creat PDF files usually have the newest and I have found that the older readers will not read the files created by the newer writers.