1909 Alaska-Yukon-Pacific Exposition Forestry Building

The columns were 124 unpeeled old-growth fir timbers.  They were 4.5 feet in diameter and 37 feet high. Known as the “temple to timber,” it was the largest log cabin in the world. 2.5 million feet of lumber were used to create the building.

1933 Century of Progress

This card has a Scott # 728 stamp with a first-day cancellation. The artist was George W Linn, who is best known for publishing Linn’s Stamp News - the world's largest stamp publication. The pre-event slogan cancellation on this card lists the dates of the fair as June 1 - November 1, 1933. This is an error. The Exposition was open from May 27 to November 12, 1933. Another thing I think is great about the card is that it appeals to several different areas of collecting: postcards, stamps, expositions, postmarks, cachet artists, FDC, postal slogans, and errors, just to name a few.

 

1958 BRUSSELS EXPO QSL CARD

According to sources on the internet, on May 11, 1958 the national station of the UAB (Belgian amateur radio society) transmitted from the exposition for the first time. Willy Acke ON4AW created this special QSL to celebrate the event ( the second card ON4LB0). I suspect that the other QSL card was also used by operators during the expo to confirm contacts from that station.