This is an illustration of the world famous Tabernacle located on Temple Square in Salt Lake City.

The description states:
This mammoth auditorium is 150 feet by 250 feet and 80 feet high. It is unique and severe in design and employs a self-supported, vaulted type of roof which accounts in part for the unusual acoustics of the building. A nation-wide radio program, featured the great Tabernacle organ and choir, originates in this auditorium.
–The radio program expanded into a TV show as well, and with the arrival of the internet, the choir is broadcast online as well. This card dates from the 1940s.

Closing in some from the previous card, and descending to ground level, the artist has rendered the Temple building at night with the appearance of lights on the upper half of the towers.

The description on the back states:
THE ‘MORMON’ CHURCH, whose official designation is the Church of Jesus Christ of Latter-Day Saints, was organized in Fayette, Seneca County, New York, April 6, 1830, with six members. The week of April 6, 1930 was celebrated as Centennial week wherever a unit of the Church was then located. The illumination of all ‘Mormon’ Temples was part of the ceremonies. The Church now has approximately 1,000,000 members.
–Obviously, now that nearly 75 years have passed, there are far more members of the LDS church. This card dates from the 1940s.

This card image is an artist’s rendition of a more common daytime scene, but with a dark cast and a few added lights to imply nighttime. On the right is the Mormon Temple, and center is the domed building of the Tabernacle.

The description states:
The Temple Block is a ten acre square, encompassed by a solid stone and adobe wall, 12 feet high an d3 feet thick, with large gates on each of the four sides. Within the wall red the Great Mormon Temple, Tabernacle, Assembly Hall, Museum, the First House built in Utah and Bureau of Information.
–This card dates from the 1940s.

This image is an example of the kind of swimming possible in a lake so saturated with salt that one can easily float like a cork without any effort at all. The threads and perforations indicate that once there was a small bag of salt attached to the card.
The Great Salt Lake has receded and refilled a few times since this image was made, and it is unlikely the buildings shown are still in use. The famous Saltair resort was the most active venue along the lake, and has seen many ups and downs.

The description states:
Great Salt Lake, located 15 miles west of Salt Lake City, is the largest of its character in the world. The water is about 22% solids and one may float upon its surface without effort. Thousands of tons of salt, obtained by solar evaporation, arer produced annually by the industries on its shores.
–This card, like the others in the same series, dates from the 1940s.