The radiant time series (RTS) method is a new method, derived directly fiom the heat balance method, for performing. design cooling load calculations. It effectively replaces all other. simplified (non-heat-balance) methods such as the cooling load.
The last wheat pennies were made in 1958. They were produced from 1909 to 1958. They are generally common and worth a few cents above face value and can be found in pocket chaâ¦nge.
History of the Lincoln Memorial Penny. The Lincoln penny was first minted in 1909 with a reverse design that featured two ears of wheat. In 1959 the mint celebrated the 50th anniversary of the Lincoln penny by changing the reverse design to feature a rendition of the Lincoln Memorial designed by mint engraver Frank Gasparro. Additionally, this was done to commemorate the 150th anniversary of Abraham Lincoln's birth.