Quick summary of what a "Caplan" thruster is:
A Dyson swarm collecting sunlight, shooting it back at the Sun to stir up mass as solar winds.
Some system to collect that solar wind.
Fusion reactors, using the helium from the collected solar wind.
A fusion product jet of oxygen-14 pointed into space.
A hydrogen jet pointed back at the Sun.
The images in question were copied onto the disk with permission of the copyright holder. There are two copies of the disk that were placed specifically to be found and read by intelligent life. Both are currently still in the Sol system. One can be found in the direction of the very bright star Sirius and the other about halfway between the Big Dipper and ...
For free, but low-resolution: Small versions of all1 the images are included in the book Murmurs of Earth by Sagan etc.
Chapter 3 "Pictures of Earth" includes a visual index and then slightly higher quality versions of each picture1. Some are even in color. Descriptive text is included for each image.
You can check it out and see them at the ...