I have found a large selection of series landscape paintings by Monet. I could not find many drawings of series, but here is one drawing. I like the lines he uses to draw the skies. And the curvy zigzag lines of the water.
The drawings in the Waterloo Bridge series are different from each other because of the weather. The positions they are drawn from are fairly similar in all of the drawings I have found, but they are drawn in different weather conditions so that the view changes a lot each time. This is because of visibility due to clouds, fog, overcasting, bright sunlight, times of year and times of day. The other element which changes the view is boats in the water.
The drawing below probably took less time than the one above. It is interesting to see how the different types of marks made in this quick drawing distinguish the water from the solid, man made bridge and the view of the distance.
The drawing below does not show the cityscape beyond the bridge. It seems to glow and shimmer.
I think the drawing below was made on an overcast day, so it is darker. The shadows cast by the bridge are similar, however. It creates a very calm atmosphere.
I think this must be another quickly drawn image, which looks very washed out, with lots of smudging used to blend. You still can see the shadows in the water and the reflected light.
Waterloo Bridge, Sunlight in the Fog is drawn from a larger view point, giving us more perspective. You can see the sun and more of the bridge. There are not many details, except for on the water. That must have been because of the fog.
The drawing below is drawn at a different time of day, which I deduce from the shadows being positioned differently and the bridge is lit up. I would guess the sun was low.
Waterloo Bridge with Sun is difficult to see very distinctly. It observes the clouds and the reflection of sunlight on the water. It is quite a dark drawing.
This drawing is quite misty and bright. You can see buildings in the distance and boats in the foreground.
The drawing below is a different colour scheme from the others. It is another drawing made on an overcast day, in pinks, purples and blues. This seems like an evening time drawing. It has a sleepy atmosphere. Perhaps this is because of the soft marks and blending.
The Haystacks series of drawings shows how you can look at an area from different angles and see different things. This drawing shows the view with the sun beyond the haystack, out of sight, casting a shadow.
The drawing above shows us a line of haystacks going into the distance, and blocking out the sun as it is setting. The colours are vibrant at this time of day. Below shows paler colours. I am not certain where the sun is, but it is not behind the artist, as it does not light up the haystack.
Below shows the haystacks with a little more space around them. You can see a lot more of the landscape in the distance, trees and hills and sky. The sun lights up everything from the right and casts shadows on the left.
The drawing below has a lot of pinks and purples. The light is directly ahead because you can see a little bit of sun. You can see it was a misty day even before you read the title. It is pale in the distance and the haystack has a strong contrast.
This drawing shows layers of foreground, middle ground, fore-background, background and sky. It has layers. The shadows are very dark and the places where light is drawn seem to shine.